Hundreds of thousands of viruses can lurk in our guts — but how they impact our bodies is a mystery.
A virus is defined as any of a various number of submicroscopic parasites that can infect any animal, plant or bacteria and often lead to very serious or even deadly diseases. A virus consists of a core of RNA or DNA, generally surrounded by a protein, lipid or glycoprotein coat, or some combination of the three. No virus can replicate without the help of a host cell, and though they can be spread, viruses lack the ability of self-reproduction and are not always considered to be living organisms in the regular sense.Some of the most common or best known viruses include the human immunodeficiency virus (HIV), which is the virus that causes AIDS, the herpes simplex virus, which causes cold sores, smallpox, multiple sclerosis, and the human papilloma virus, now believed to be a leading cause of cervical cancer in adult women. The common human cold is also caused by a virus.Since a great deal of mystery still surrounds the origins of most modern viruses, ways to cure these viruses and the diseases they cause are still in the very early stages of development.
In 1872 the U.S. economy was growing as the young nation industrialized and expanded westward. Then in the autumn, a sudden shock paralyzed social and economic life.
How will you know if you have the novel coronavirus that causes the COVID-19 disease? Here are the most common symptoms.
A deadly virus that causes fevers, abdominal pain, vomiting, bleeding gums, skin rash and pain behind the eyes can now jump from one person to another.
Honey probably works about as well as or better than over-the-counter cough syrups. The bad news is, those don't work that well.
New Zealand, a country of about 4.8 million, has now gone 100 days without a single locally transmitted case of COVID-19.
The U.S. continues to break daily COVID-19 records, with 75,600 new cases just logged in a single day.
There's plenty of nonsense about the coronavirus online. Here are some of the biggest COVID-19 myths out there and the science to explain why they aren't true.
Bats carry a lot of viruses, some of which make people sick. So why don't bats get sick from these pathogens?
Since the new coronavirus was first discovered in January, many people have compared it with a more well-known disease: The flu.
Zoonotic diseases are on the rise, but the transfer of a disease-causing germ from an animal to a human is still very rare.
For anyone wondering whether "disinfectant injections" to treat coronavirus are around the corner, the answer is absolutely not.
The novel coronavirus may have been spreading in the San Francisco Bay Area well before anyone knew, as a coroner has reported two COVID-19 fatalities there in early February.
Where did SARS-CoV-2 come from? Several ideas have been put forward from natural-borne in bats, an escape from a lab in Wuhan and others. Here's the murky origin story of the novel coronavirus.