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Viral Infections

What are viruses?

Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease. Some of the diseases that viruses can cause include the common cold, the flu, COVID-19, and HIV.

How are viruses spread?

Viruses can be spread in different ways:

(Read more)

Results 1 - 10 of 1,550 for Viral
  1. Viral Infections (National Library of Medicine)  
    ... immune system cell. What are the treatments for viral infections? For most viral infections, treatments can only help with symptoms while ... virus. There are antiviral medicines to treat some viral infections. Antibiotics do not work for viral infections. ...
    https://medlineplus.gov/viralinfections.html - Health Topics
  2. Hepatitis (National Library of Medicine)  
    ... are different types of hepatitis, with different causes: Viral hepatitis is the most common type. It is ... your environment may play a role. How is viral hepatitis spread? Hepatitis A and hepatitis E usually ...
    https://medlineplus.gov/hepatitis.html - Health Topics
  3. HIV Viral Load: MedlinePlus Medical Test 
    HIV Viral Load What is an HIV Viral Load? An HIV viral load is a blood test that measures the amount of HIV in a sample of your blood. HIV stands ... very high. Why do I need an HIV viral load? A viral load test is needed to ...
    https://medlineplus.gov/lab-tests/hiv-viral-load - Medical Tests
  4. COVID-19 Testing (National Library of Medicine)  
    ... two types of tests for this virus: A viral test tells you if you have a current infection. Viral tests can either be rapid tests or laboratory ... health care provider. Even if your COVID-19 viral test is negative (the test did not detect ...
    https://medlineplus.gov/covid19testing.html - Health Topics
  5. Croup (National Library of Medicine)  
    ... in the fall and winter. Most cases of viral croup are mild and can be treated at ...
    https://medlineplus.gov/croup.html - Health Topics
  6. Viral gastroenteritis (stomach flu) 
    Viral gastroenteritis is present when a virus causes an infection of the stomach and intestine. The infection ...
    https://medlineplus.gov/ency/article/000252.htm - Medical Encyclopedia
  7. Viral pneumonia 
    ... lung tissue due to infection with a germ. Viral pneumonia is caused by a virus. ... Viral pneumonia is more likely to occur in young children and older adults. This is because their ...
    https://medlineplus.gov/ency/article/000073.htm - Medical Encyclopedia
  8. Viral arthritis 
    Viral arthritis is swelling and irritation (inflammation) of a joint caused by a viral infection. ... The outcome is usually good. Most viral arthritis disappears within several days or weeks when the virus-related disease goes away.
    https://medlineplus.gov/ency/article/000416.htm - Medical Encyclopedia
  9. Hemorrhagic Fevers (National Library of Medicine)  
    Viral hemorrhagic fevers (VHFs) are a group of illnesses caused by four families of viruses. These include ... are no effective treatments for some of these viral infections, there is concern about their use in ...
    https://medlineplus.gov/hemorrhagicfevers.html - Health Topics
  10. Viral Hepatitis (Department of Health and Human Services, Office on Women's Health)  
    Hepatitis/Start Here ... Hepatitis ... Department of Health and Human Services, Office on Women's Health
    https://www.womenshealth.gov/a-z-topics/viral-hepatitis - External Health Links
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