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 ...
Infectious diseases are caused by microscopic germs (such as bacteria or
viruses) that get into the body and cause problems. Some — but not all —
Jul 30, 2015 ... The flu is a viral infection that targets your head and chest. ... Colds are
contagious from one day before you begin to experience symptoms until five to
seven days after initially getting sick. .... All rights reserved for Healthline.
Jul 30, 2015 ... When is a person with a cold contagious? ... Like all viruses, those that cause
colds trick cells in the body into ingesting them and then take over ...
Oct 23, 2014 ... Here are the nine viruses that are the world's worst killers, based on their ... In the
modern world, the deadliest virus of all may be HIV. ... A single smallpox virus,
magnified at 310,000X. Smallpox is a highly contagious and ...
Understand the differences between bacterial infections and viral infections. ...
What's the difference between a bacterial infection and a viral infection? Answers
from James M. Steckelberg, M.D.. As you might ... and Research. All rights
Sep 24, 2015 ... Not all infectious diseases are contagious, however. Instead of being spread from
one person to another, some infections can only be spread ...
Aug 11, 2013 ... Learn about Viral Diseases on Healthgrades.com, including information on
symptoms, causes and treatments.
May 28, 2015 ... Find out if coughs are contagious, and how long you may be exposed to an
infection if you are near someone who coughs. Types of coughs ...
Aug 10, 2015 ... Find out if skin rashes are contagious, discover how rashes spread, and learn ...
that are considered contagious; not all experts agree on these designations, ...
Rash and blisters that accompany shingles (herpes zoster virus) ...