Viruses

Viruses are microscopic infectious agents that exist in nature, and can cause diseases in animals, plants, and bacteria. Viruses contain genetic material and they multiply by invading living cells, hijacking their machinery and using them to produce more viruses. Viruses don’t have the ability to reproduce on their own and are dependent on the cells they invade. They are highly contagious and can spread rapidly in different ways, such as through contact with bodily fluids, contaminated objects and even through the air. As a result, they can cause illnesses that range from the common cold to more serious diseases such as AIDS, SARS (severe acute respiratory syndrome) and Ebola. Vaccines, antiviral medications and good hygiene practices are used to protect against viral infections. Research into viruses is vital in order to better understand them and develop medicines to treat and prevent illnesses caused by them.