According to Flu, a U.S. Department of Health and Human Services website, influenza A's symptoms are similar to other strains of flu, consisting of fever, chills, coughing, sore throat, runny or congested nose, headaches and fatigue. Vomiting and diarrhea occurs primarily in children and occasionally in adults.Know More
Influenza A can infect animals, though WebMD says this is less common. It is typically transmitted through wild birds or other people. Of the three types of flu, only types A and B can affect humans with any severity.
The influenza A virus and its variants change constantly, which is why medical professionals emphasize the need to receive the flu vaccine yearly. As an example, in 2009 when the so-called "swine flu" began to spread, the virus strain differed significantly from typical flu and caused the first flu pandemic in 45 years. While there is no vaccine for avian or swine flu, the yearly vaccine recommended by the CDC contains protections against H1N1 and H3N2 viruses.
The World Health Organization warns that Type A flu has a higher incidence of viral pneumonia and higher fatality results among healthy young adults. It occurs more frequently in the winter season. As with any type of influenza, Type A flu is transmitted through any surface that an infected person has touched.Learn more about Conditions & Diseases
According to WebMD.com, influenza, or what is commonly known as flu, is a viral infection of the respiratory system that can cause symptoms such as headache, muscle and body ache, fatigue, fever, coughing and congestion. These symptoms can occur instantaneously and last for several days or up to a week. It can also render a person incapable of functioning well, About.com reports.Full Answer >
Scarlet fever is contagious and typically contracted through fluids from the throat and nose when an infected individual coughs or sneezes, according to KidsHealth. It can also be spread through eating utensils and cups. Scarlet fever is caused by an infectious group-A streptococcus bacteria, which also causes strep throat.Full Answer >
A mycoplasma infection causes respiratory symptoms including sore throat, fever, fatigue, headache, a cough that steadily worsens and lasts for weeks or months and pneumonia. The Centers for Disease Control and Prevention states that mycoplasma, or the bacterium Mycoplasma pneumoniae, causes a mild illness where the symptoms appear and grow worse over a period of one to four weeks.Full Answer >
According to AIDS.gov, the early symptoms for HIV include fever, swollen glands, rash, fatigue, sore throat, headache and muscle and joint pains. These symptoms can last anywhere from a few days to several weeks.Full Answer >