HIV is a viral infection that slowly weakens your immune system. The virus kills a type of white blood cell called CD4. A normal CD4 count ranges from 500 to 2,000. You have HIV when your CD4 count ranges from 200 to 500. You have AIDS (acquired immune deficiency syndrome) when your...
Ask a question Search AnswersLearn more about this topic: The Stomach Flu & Viruses of the Caliciviridae Virus Family from Chapter 11 / Lesson 4 7.9K When humans contract the stomach flu, it most likely is caused by a Caliciviridae virus. Learn about this family of viruses, including ...
it looks like this. If anything kills over 10 million people in the next few decades, it's most likely to be a highly infectious virus rather than a war. Not missiles, but microbes. Now, part of the reason for this is that we've invested a huge amount in nuclear deterrents. But we...
What kills the Norwalk virus?An Illness:The Norwalk virus is also known as the norovirus, and is a gastrointestinal illness that is characterized by an acute onset of vomiting and diarrhea. Symptoms are typically short-lived, lasting from 24 to 48 hours....
* Since the virus is not a living organism but a protein molecule, it is not killed, but decays on its own. The disintegration time depends on the temperature, humidity and type of material where it lies. * The virus is very fragile; the only thing that protects it is a thin outer ...
Clean toilets with a product that kills germs. Let your healthcare provider know if your adolescent's work involves preparing or serving food, or close physical contact with other people. If he or she does this kind of work, the health department will need to evaluate if these people have ...
Although HIV kills the immune cells sent to kill the virus, there is widespread variation in the rate at which HIV infected people become ill with AIDS. So scientists ask:Can the elements of the immune system responsible for that variability be identified?If so, can they be used to stop ...
The viral strain that drove the 2014-2016 Ebola outbreak in West Africakills up to 90% of the people it infects, making it the most lethal member of the Ebola family. HIV “It is still the one that is the biggest killer,” said Dr. Amesh Adalja, an infectious disease physici...
Latest outbreak of deadly bird flu kills 220 flamingos in Argentina. The virus’ global spread concerns experts While branches of the tree of life are vanishing, the distribution of certain animal species isbecoming more homogenized—the world is home to about 19.6 billion chickens, 980 million pi...
humans to contract the virus directly from infected birds. Direct infection can occur if the virus gets into a person’s eyes, nose or mouth. It can also occur if the virus is inhaled or if a person touches a surface that has the virus on it and then touches their nose, mouth or ...