Web Results

m.kidshealth.org/en/teens/contagious.html

Infectious diseases are caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems. Some — but not all — infectious ...

www.onhealth.com/content/1/viral_infections

Jul 1, 2016 ... Viral infections are contagious for varying periods of time depending on the ... individuals can all reduce the spread of respiratory infections.

www.reference.com/health/viruses-contagious-385cdbc6382a900a

Microbe World explains that all viruses are infectious by their nature, but not all viruses are infectious to humans. A virus requires a living host cell in order to ...

www.healthline.com/health/cold-flu/contagious

Apr 3, 2017 ... Even if you feel all right, your symptoms — or lack thereof — could be ... You also spread bacteria and viruses when you touch your eyes, nose, ...

www.nhs.uk/chq/Pages/1068.aspx?CategoryID=67

How long you're infectious after a viral infection depends on the virus that caused the infection. ... a few days before your symptoms appear until all of the symptoms are gone. ... Tonsillitis itself isn't contagious but the viruses that cause it are.

diseasea12.imascientist.org.au/2012/09/04/what-makes-a-virus-contagious-or-not

Sep 4, 2012 ... A virus is contagious or not (in a specific host, and a specific environment) because of the way it spreads between hosts. Contagious viruses ...

www.virology.ws/2014/10/08/the-incubation-period-of-a-viral-infection

Oct 8, 2014 ... Whether the host is contagious depends on the virus. ... All of these cite viremia in the range of 50,000 to 10 million RNA copies per cc on the ...

www.mayoclinic.org/diseases-conditions/infectious-diseases/expert-answers/infectious-disease/faq-20058098

As you might think, bacterial infections are caused by bacteria, and viral infections are caused by viruses. Perhaps the most important distinction between  ...

www.health.harvard.edu/diseases-and-conditions/respiratory-tract-infection-is-it-contagious-the-family-healthguide

Jan 23, 2017 ... A medical review published in the New England Journal of Medicine tells us when to exercise concern over eight respiratory tract infections.