Definitions of Computer
An electronic, digital device that stores and processes information
An electronic device that has the ability to store, retrieve, and process data, and can be programmed with instructions that it remembers. The physical parts that make up a computer (the central processing unit, input, output, and memory) are called hardware. ...
The term computer can refer to just a (1) a boxy device which contains a hard disk drive (HDD), memory, a CPU (central processing unit) and other circuitry, or it can refer to (2) the boxy device plus peripheral devices, such as a display, keyboard and mouse. ...
The ability to access a computer or a network from a remote site
a programmable machine that inputs, processes and outputs dat
A "computer" is defined for Current Population Surveys as a personal or home workstation having a typewriter-like keyboard connected to a laptop computer, mini-computer, or mainframe comp
Originally, the term referred to a person who did mathematical calculations using a mechanical calculation device or an analogue computer. Today, the term 'computer' refers to the electronic machine that is able to store, process and manipulate data. ...
This document includes a brief overview of basic computing concepts. It is the first in a series of three self-instruction Internet tutorials produced by the Bedford Public Library.You can scroll through the document or jump to any of the topics listed below. You can also print the entire document by printing this page.
What is a Computer?Software and HardwareHardware ComponentsHardware AccessoriesOperating System SoftwareSoftware ApplicationsReference
What is a Computer?
Computers are not very intelligent devices, but they handle instructions flawlessly and fast. They must follow explicit directions from both the user and computer programmer. Computers are really nothing more than a very powerful calculator with some great accessories. Applications like word processing and games are just a very complex math problem.
Software and Hardware
If you use a player piano as an analogy, the piano can be thought of as the hardware and the roll of music as the software.The software a series of very simple computer instructions carefully organized to complete complex tasks. These instructions are written in programming languages (like BASIC, PASCAL, C...) to help simplify the development of applications.The hardware is what sits on your desk and executes the software instructions. The player piano is useless unless the roll of music has been written correctly.
Hardware Components
Input Devices -- "How to tell it what to do"
- A keyboard and mouse are the standard way to interact with the computer. Other devices include joysticks and game pads used primarly for games.
Output Devices -- "How it shows you what it is doing"
- The monitor (the screen) is how the computer sends information back to you, whether it be surfing the web or writing a memo. A printer is also an output device.
Storage Devices -- "How it saves data and programs"
- Hard disk drives are an internal, higher capacity drive which also stores the operating system which runs when you power on the computer.- "Floppy" disk drives allow you to save work on small disks and take the data with you.
Memory -- "How the processor stores and uses immediate data"
- When you use a program, the computer loads a portion of the program from the hard drive to the much faster memory (RAM). When you "save" your work or quit the program, the data gets written back to the hard drive.
Microprocessors -- "The brain of the computer"
- PCs primarily use microprocessors (sometimes called the chip) manufactured by Intel. The older Intel versions include the 386, 486 and now the Pentium line.
- Macintoshes use PowerPC processors by Motorola.
- Megahertz (MHz) is the internal processor speed in which computer instructions are performed. The MHz speed does not always indicate the power of the microprocessor. Newer processors can execute more instructions at the same or slower MHz. For example, an Intel 486 @100MHz is less powerful than a Pentium @75 MHz (but the MHz is "faster").
Hardware Accessories
Modems
- Modems allow you to communicate with other computers using a phone line. Modem speeds are in bits per second (14.4, 28.8 and 56 thousand bits per second are standard).
CD-ROM Drives
- A CD-ROM drive is a high capacity storage device which lets you read data from the disk, but not write data back. The speed of the drive (how fast the CD platter spins) is measured in multiples from the first generation drives. New drives are up to 24X (or 24 times the first drives), but while the CD spins faster, it is not really 24 times faster in actual output.
Printers
- There are different types of printers (laser, ink jet, dot matrix) with differing quality of output. They are measured in dpi (dots per inch) and ppm (pages per minute), the higher the better.
Scanners
- Scanners "digitize" printed material (like photos and graphics) and save it to a graphic file format (like .GIF or .JPG) for display on the computer.
Operating System Software
Operating system software provides a "user interface" for users to manage files, start programs, customize computer settings, and other tasks. The operating system also provides the fundamental core computer functionality for programmers.Intel based PCs use Microsoft Windows version 3.1 (older) or Windows 95 as the operating system. Macintoshes use the Macintosh operating system.
Software Applications
Application software uses the operating system software and provides the real functionality of a computer. Applications include:
- Word Processing (MS Word, WordPerfect, Ami...)- Spreadsheets (Lotus 123, MS Excel...)- Database (DBase, Fox Pro, Oracle...)- Presentation (MS PowerPoint, Persuasion...)- Internet Browsers (Netscape Navigator, MS Internet Explorer)- Games
Computer viruses are small software programs that are designed to spread from one computer to another and to interfere with computer operation.
A virus might corrupt or delete data on your computer, use your e-mail program to spread itself to other computers, or even erase everything on your hard disk.
Viruses are most easily spread by attachments in e-mail messages or instant messaging messages. That is why it is essential that you never open e-mail attachments unless you know who it's from and you are expecting it.
Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files.
Viruses also spread through downloads on the Internet. They can be hidden in illicit software or other files or programs you might download.
To help avoid viruses, it's essential that you keep your computer current with the latest updates and antivirus tools, stay informed about recent threats, and that you follow a few basic rules when you surf the Internet, download files, and open attachments.
Once a virus is on your computer, its type or the method it used to get there is not as important as removing it and preventing further infection.
Umukoro david
Wednesday, December 26, 2007
Tuesday, December 11, 2007
Slow cookers
6-Quart Meal Maker Slow Cooker by Hamilton Beach
//
Slow cookers are one of the most appreciated kitchen appliances. For a ready-made dinner after work, all the home chef needs to do is put the ingredients in the crock the night before and refrigerate, then in the morning before leaving for work, place the crock in the cooker base and turn the knob on. Succulent roasts or stews are done by dinner time. Decorated with garden-fresh vegetables, this six-quart oval-shaped model holds a 6-pound beef roast, 6-pound chicken, two 3-pound rib packs, or approximately 5 quarts of stew or soup. Wraparound heat ensures food cooks from the sides, not just the bottom. The temperature knob features two cook settings, low and high, and a keep warm setting for serving after food is thoroughly cooked. An included latch keeps the lid secured for transporting. The crock removes from the base for use in a microwave or oven, and both the crock and lid are dishwasher-safe.
Price
$46.99
Availability
Available to Ship
Quantity
//
Slow cookers are one of the most appreciated kitchen appliances. For a ready-made dinner after work, all the home chef needs to do is put the ingredients in the crock the night before and refrigerate, then in the morning before leaving for work, place the crock in the cooker base and turn the knob on. Succulent roasts or stews are done by dinner time. Decorated with garden-fresh vegetables, this six-quart oval-shaped model holds a 6-pound beef roast, 6-pound chicken, two 3-pound rib packs, or approximately 5 quarts of stew or soup. Wraparound heat ensures food cooks from the sides, not just the bottom. The temperature knob features two cook settings, low and high, and a keep warm setting for serving after food is thoroughly cooked. An included latch keeps the lid secured for transporting. The crock removes from the base for use in a microwave or oven, and both the crock and lid are dishwasher-safe.
Price
$46.99
Availability
Available to Ship
Quantity
Breast cancer
Breast cancer is a growth of abnormal cells within the breast. Breast cancer is not a single disease but rather a group of diseases that can develop in the ducts (which carry milk to the nipple), the lobules (milk producing areas) or other parts of the breast.
After non-melanoma skin cancer, breast cancer is the most common form of cancer in women. For 2007, the American Cancer Society (ACS) estimates that more than 178,000 new cases of breast cancer will be diagnosed, adding to the 2 million women who have been diagnosed and treated previously for this disease. In addition, the ACS estimates that nearly 40,500 women are expected to die from breast cancer in 2007, making it the second leading cause of cancer death among women (surpassed only by lung cancer).
Although rare, men can also develop breast cancer. In the United States, about 2,000 men are expected to develop breast cancer in 2007, and about 450 men will die from the disease, according to the ACS. However, breast cancer primarily affects women.
Common ways to screen for breast cancer include monthly breast self-examination, clinical breast examination performed by a physician and screening mammography. However, to confirm a diagnosis of breast cancer, a biopsy is performed in which all or part of the mass is removed and then analyzed by a pathologist who views the specimen under a microscope.
Based on the findings by the pathologist, if the tumor is cancerous (malignant) then additional tests, such as an MRI, ultrasound or PET scan may be ordered. All these tests provide the physician with additional information as to the location and stage (extent of spread) of the cancer and other information about the tumor and how it may respond to treatment.
There are several options for breast surgery ranging from the breast-sparing lumpectomy to the now rarely used Halsted radical mastectomy, which removes the breast, the chest muscles and nearby lymph nodes.
In addition to surgery, a patient may receive additional treatment based on the type of breast cancer, its size and other important factors. The size of the tumor, the possible spread of the cancer to the lymph nodes and any possible spread to other organs or tissues helps the oncologist (cancer physician) determine the stage of the cancer. This information, in turn, gives the physician the necessary input to select the best treatment options for the patient. These options can include a wide variety of combinations of treatment, including surgery, radiation therapy, chemotherapy, hormone therapy or biological therapy.
A major study released in 2006 indicated that the number of new cases of breast cancer dropped significantly in the reporting period of 2002 to 2003. The ACS has reported a leveling off of new cases from 2001 to 2003, after 20 years of increases.
Overall survival rates for breast cancer are quite high when the disease is detected and treated in its earliest stages. When breast cancer progresses undetected to later stages, the survival rates drop. The 5-year survival rate for cancer that is localized (not spread to the lymph nodes or areas outside of the breast) is 98 percent. If the cancer has spread to nearby tissues, the 5-year survival rate is 83 percent.
According the ACS, large gains in survival rates for several cancers, including breast cancer, have been recorded over the past two decades. The overall survival rate for all stages of cancer at 5 years is 89 percent and at 10 years is 80 percent.
After non-melanoma skin cancer, breast cancer is the most common form of cancer in women. For 2007, the American Cancer Society (ACS) estimates that more than 178,000 new cases of breast cancer will be diagnosed, adding to the 2 million women who have been diagnosed and treated previously for this disease. In addition, the ACS estimates that nearly 40,500 women are expected to die from breast cancer in 2007, making it the second leading cause of cancer death among women (surpassed only by lung cancer).
Although rare, men can also develop breast cancer. In the United States, about 2,000 men are expected to develop breast cancer in 2007, and about 450 men will die from the disease, according to the ACS. However, breast cancer primarily affects women.
Common ways to screen for breast cancer include monthly breast self-examination, clinical breast examination performed by a physician and screening mammography. However, to confirm a diagnosis of breast cancer, a biopsy is performed in which all or part of the mass is removed and then analyzed by a pathologist who views the specimen under a microscope.
Based on the findings by the pathologist, if the tumor is cancerous (malignant) then additional tests, such as an MRI, ultrasound or PET scan may be ordered. All these tests provide the physician with additional information as to the location and stage (extent of spread) of the cancer and other information about the tumor and how it may respond to treatment.
There are several options for breast surgery ranging from the breast-sparing lumpectomy to the now rarely used Halsted radical mastectomy, which removes the breast, the chest muscles and nearby lymph nodes.
In addition to surgery, a patient may receive additional treatment based on the type of breast cancer, its size and other important factors. The size of the tumor, the possible spread of the cancer to the lymph nodes and any possible spread to other organs or tissues helps the oncologist (cancer physician) determine the stage of the cancer. This information, in turn, gives the physician the necessary input to select the best treatment options for the patient. These options can include a wide variety of combinations of treatment, including surgery, radiation therapy, chemotherapy, hormone therapy or biological therapy.
A major study released in 2006 indicated that the number of new cases of breast cancer dropped significantly in the reporting period of 2002 to 2003. The ACS has reported a leveling off of new cases from 2001 to 2003, after 20 years of increases.
Overall survival rates for breast cancer are quite high when the disease is detected and treated in its earliest stages. When breast cancer progresses undetected to later stages, the survival rates drop. The 5-year survival rate for cancer that is localized (not spread to the lymph nodes or areas outside of the breast) is 98 percent. If the cancer has spread to nearby tissues, the 5-year survival rate is 83 percent.
According the ACS, large gains in survival rates for several cancers, including breast cancer, have been recorded over the past two decades. The overall survival rate for all stages of cancer at 5 years is 89 percent and at 10 years is 80 percent.
Strep throat infection
Strep throat is an infection caused by group A streptococci bacteria. These bacteria can cause inflammation and infection in a variety of areas throughout the body, including the respiratory system, skin and vital organs.
A strep throat infection can be transmitted by kissing, coughing, sneezing or touching contaminated surfaces. Symptoms usually appear within five days of exposure to the bacteria and include a sore throat, fever, swollen neck glands and tonsils. Symptoms tend to begin suddenly and are usually more severe than those experienced with viral infections. Coughing and a runny nose are not signs of strep throat.
Most cases of strep throat occur in children between the ages of 5 and 15 years. Strep throat rarely occurs in infants and toddlers. Children who spend time in crowded environments (e.g., daycare facilities, school) or who live in northern areas of the United States face an increased risk of developing strep throat.
Parents who suspect their child has strep throat should consult their child’s pediatrician. A physical examination and medical history may be performed, although the only way to identify the presence of strep throat is with a throat culture and/or rapid strep test (test that is similar to a throat culture, except with faster results).
Children with strep throat are treated with antibiotics. This kills the bacteria that causes infection, limits the spread of infection to others, and prevents serious medical conditions that may occur if an untreated infection spreads throughout the body. Children remain contagious for at least a day after beginning treatment. While children are recuperating from infection, parents can help make recovery as comfortable as possible.
It may be impossible to completely avoid people carrying the bacteria that cause strep throat. Some people may carry the bacteria but never develop an infection themselves and will not display any symptoms. Perhaps the best way to prevent infection is to practice good hygiene (e.g., handwashing with soap and water). Replacing a child’s toothbrush after infections is a good way to prevent the recurrence of infection.
A strep throat infection can be transmitted by kissing, coughing, sneezing or touching contaminated surfaces. Symptoms usually appear within five days of exposure to the bacteria and include a sore throat, fever, swollen neck glands and tonsils. Symptoms tend to begin suddenly and are usually more severe than those experienced with viral infections. Coughing and a runny nose are not signs of strep throat.
Most cases of strep throat occur in children between the ages of 5 and 15 years. Strep throat rarely occurs in infants and toddlers. Children who spend time in crowded environments (e.g., daycare facilities, school) or who live in northern areas of the United States face an increased risk of developing strep throat.
Parents who suspect their child has strep throat should consult their child’s pediatrician. A physical examination and medical history may be performed, although the only way to identify the presence of strep throat is with a throat culture and/or rapid strep test (test that is similar to a throat culture, except with faster results).
Children with strep throat are treated with antibiotics. This kills the bacteria that causes infection, limits the spread of infection to others, and prevents serious medical conditions that may occur if an untreated infection spreads throughout the body. Children remain contagious for at least a day after beginning treatment. While children are recuperating from infection, parents can help make recovery as comfortable as possible.
It may be impossible to completely avoid people carrying the bacteria that cause strep throat. Some people may carry the bacteria but never develop an infection themselves and will not display any symptoms. Perhaps the best way to prevent infection is to practice good hygiene (e.g., handwashing with soap and water). Replacing a child’s toothbrush after infections is a good way to prevent the recurrence of infection.
Prevention (scarlet fever)
Prevention methods for scarlet fever
The bacteria that cause scarlet fever can be passed through direct contact and through droplets in mucus and nasal fluids. Close contact with an infected person or items they have used can spread the disease. Good hygiene may prevent transmission. Regular handwashing and carefully separating and washing utensils and dishes used by an infected person can help prevent transmission. Avoid touching hands to the eyes, nose or mouth.
Infected patients should be kept out of work, school or daycare until they have been treated with antibiotics for at least 24 hours. Schools or daycare centers should be notified if a child contracts scarlet fever so other children and parents can attempt to prevent further transmission. If a child frequently gets a sore throat or strep throat, a physician may recommend tonsillectomy (removal of the tonsils) to prevent future strep infections
The bacteria that cause scarlet fever can be passed through direct contact and through droplets in mucus and nasal fluids. Close contact with an infected person or items they have used can spread the disease. Good hygiene may prevent transmission. Regular handwashing and carefully separating and washing utensils and dishes used by an infected person can help prevent transmission. Avoid touching hands to the eyes, nose or mouth.
Infected patients should be kept out of work, school or daycare until they have been treated with antibiotics for at least 24 hours. Schools or daycare centers should be notified if a child contracts scarlet fever so other children and parents can attempt to prevent further transmission. If a child frequently gets a sore throat or strep throat, a physician may recommend tonsillectomy (removal of the tonsils) to prevent future strep infections
Diagnosis and treatment for scarlet fever
Diagnosis and treatment for scarlet fever
The rash that accompanies scarlet fever is unique and may be readily identified by a physician. The physician will also compile a medical history, including any potential exposure to infection, and perform a physical examination. Although scarlet fever is not usually difficult to diagnose, milder cases (in which throat examination does not conclusively show strep infection) may resemble other conditions, such as rubella.
Identification of the Streptococci bacteria is also important. A physician or nurse may use a swab to take a sample of material from the back of the throat. A rapid strep test of this sample may identify strep throat in about five to 10 minutes. A throat culture takes two to three days to identify strep throat as the source of the scarlet fever.
Physicians treat scarlet fever with antibiotics. Patients should remain away from school, work or other public areas until they have taken antibiotics for at least 24 hours. The antibiotic prescription should be used until it is finished (usually 10 days), even if the symptoms have subsided. Other symptoms of scarlet fever may also be treated to make the patient more comfortable. Foods and beverages to soothe a sore throat include soup and ice cream. Patients should drink plenty of liquids. A pain reliever such as acetaminophen may be given to children with fever. Children with fever should never take aspirin because of the potential for developing Reye syndrome.
The rash that accompanies scarlet fever is unique and may be readily identified by a physician. The physician will also compile a medical history, including any potential exposure to infection, and perform a physical examination. Although scarlet fever is not usually difficult to diagnose, milder cases (in which throat examination does not conclusively show strep infection) may resemble other conditions, such as rubella.
Identification of the Streptococci bacteria is also important. A physician or nurse may use a swab to take a sample of material from the back of the throat. A rapid strep test of this sample may identify strep throat in about five to 10 minutes. A throat culture takes two to three days to identify strep throat as the source of the scarlet fever.
Physicians treat scarlet fever with antibiotics. Patients should remain away from school, work or other public areas until they have taken antibiotics for at least 24 hours. The antibiotic prescription should be used until it is finished (usually 10 days), even if the symptoms have subsided. Other symptoms of scarlet fever may also be treated to make the patient more comfortable. Foods and beverages to soothe a sore throat include soup and ice cream. Patients should drink plenty of liquids. A pain reliever such as acetaminophen may be given to children with fever. Children with fever should never take aspirin because of the potential for developing Reye syndrome.
Scarlet fever
Scarlet fever is a bacterial infection that results in a characteristic red skin rash. It is caused by the same bacteria that cause strep throat and frequently occurs with strep throat.
Streptococci bacteria can invade the body and cause throat inflammation and strep throat. Some of these cases also develop into scarlet fever, which may also include a rash, fever and enlarged tongue. The symptoms of scarlet fever develop quickly, only a day or two after exposure to the bacteria.
Scarlet fever is passed through fluids of the nose and mouth, often by coughing, sneezing or having direct contact with an infected person. Scarlet fever can occur at any age, but is most common among children, who spread it readily in schools and daycare centers.
Physicians can diagnose scarlet fever by identifying the characteristic rash. They also may take a swab from the throat to perform a throat culture or rapid strep test to confirm the presence of streptococcal bacteria. Scarlet fever is easily treated with antibiotics and other measures to alleviate symptoms of the rash or fever. Prevention methods revolve around good hygiene and keeping patients from transmitting the disease for several days after they begin antibiotic therapy. The effect of scarlet fever on public health has changed dramatically in the past 100 years. Before antibiotics were available, scarlet fever was a common cause of serious childhood illness and death, mostly occurring when its complications affected other body systems. Quarantining patients in their homes was the only way to prevent transmission and minimize epidemics. With the antibiotics available today, scarlet fever can be readily cured within a few weeks and rarely causes serious complications. Most patients who have scarlet fever develop immunity to it and do not contract it again.About scarlet fever
Scarlet fever is an upper respiratory disease characterized by a red skin rash and high fever. The rash is caused by an allergic reaction to toxins produced by streptococcal A bacteria, the same bacteria that cause strep throat.
Streptococcal bacteria normally can live on healthy skin and may cause no problems. When the bacteria get inside the body, they can cause infections such as strep throat or the skin and tissue infections of impetigo or cellulitis. Untreated, strep throat can develop into scarlet fever. In rare cases, other streptococcal infections may cause scarlet fever, but most cases originate with strep throat.
The rash associated with scarlet fever can affect most parts of the body, except the area around the mouth. It may itch or feel like a sunburn and after several days begins to peel.
Although it can occur at any age, scarlet fever usually affects children, though some children may be more susceptible than others. The bacteria can be transmitted through mouth and nasal fluids or droplets, either directly by coughing or sneezing or sometimes from objects an infected person has touched. The disease is commonly spread in areas of close contact such as schools and daycare centers. Scarlet fever occurs more often in colder months when children spend more time indoors and in close contact.
The disease is easily treatable with antibiotics. However, left untreated, scarlet fever can infect other body systems and create other serious inflammations. Rheumatic fever can inflame connective tissue such as heart valves and damage them permanently. Glomerulonephritis is a kidney inflammation that may eventually lead to kidney failure. The advent of antibiotics has changed the course of scarlet fever. Before the middle of the 20th century, scarlet fever was a serious and often deadly childhood illness. Patients were quarantined in their homes for weeks and often their belongings were burned. People who later developed rheumatic fever spent months convalescing. Current antibiotic treatment and attention to hygiene has eliminated the need for quarantine. Most people who contract scarlet fever develop immunity to further infection with the same strain of the bacteria.
Streptococci bacteria can invade the body and cause throat inflammation and strep throat. Some of these cases also develop into scarlet fever, which may also include a rash, fever and enlarged tongue. The symptoms of scarlet fever develop quickly, only a day or two after exposure to the bacteria.
Scarlet fever is passed through fluids of the nose and mouth, often by coughing, sneezing or having direct contact with an infected person. Scarlet fever can occur at any age, but is most common among children, who spread it readily in schools and daycare centers.
Physicians can diagnose scarlet fever by identifying the characteristic rash. They also may take a swab from the throat to perform a throat culture or rapid strep test to confirm the presence of streptococcal bacteria. Scarlet fever is easily treated with antibiotics and other measures to alleviate symptoms of the rash or fever. Prevention methods revolve around good hygiene and keeping patients from transmitting the disease for several days after they begin antibiotic therapy. The effect of scarlet fever on public health has changed dramatically in the past 100 years. Before antibiotics were available, scarlet fever was a common cause of serious childhood illness and death, mostly occurring when its complications affected other body systems. Quarantining patients in their homes was the only way to prevent transmission and minimize epidemics. With the antibiotics available today, scarlet fever can be readily cured within a few weeks and rarely causes serious complications. Most patients who have scarlet fever develop immunity to it and do not contract it again.About scarlet fever
Scarlet fever is an upper respiratory disease characterized by a red skin rash and high fever. The rash is caused by an allergic reaction to toxins produced by streptococcal A bacteria, the same bacteria that cause strep throat.
Streptococcal bacteria normally can live on healthy skin and may cause no problems. When the bacteria get inside the body, they can cause infections such as strep throat or the skin and tissue infections of impetigo or cellulitis. Untreated, strep throat can develop into scarlet fever. In rare cases, other streptococcal infections may cause scarlet fever, but most cases originate with strep throat.
The rash associated with scarlet fever can affect most parts of the body, except the area around the mouth. It may itch or feel like a sunburn and after several days begins to peel.
Although it can occur at any age, scarlet fever usually affects children, though some children may be more susceptible than others. The bacteria can be transmitted through mouth and nasal fluids or droplets, either directly by coughing or sneezing or sometimes from objects an infected person has touched. The disease is commonly spread in areas of close contact such as schools and daycare centers. Scarlet fever occurs more often in colder months when children spend more time indoors and in close contact.
The disease is easily treatable with antibiotics. However, left untreated, scarlet fever can infect other body systems and create other serious inflammations. Rheumatic fever can inflame connective tissue such as heart valves and damage them permanently. Glomerulonephritis is a kidney inflammation that may eventually lead to kidney failure. The advent of antibiotics has changed the course of scarlet fever. Before the middle of the 20th century, scarlet fever was a serious and often deadly childhood illness. Patients were quarantined in their homes for weeks and often their belongings were burned. People who later developed rheumatic fever spent months convalescing. Current antibiotic treatment and attention to hygiene has eliminated the need for quarantine. Most people who contract scarlet fever develop immunity to further infection with the same strain of the bacteria.
Subscribe to:
Posts (Atom)
