The best source for vitamin D is the one that is available. That might be sunshine, or it might be a supplement.
Our expert guests explain the basics of avoiding germs, along with some surprising finer points. Which rooms are most likely to be germy?
Monkeypox infections have been spreading in the US as well as elsewhere around the world. What is the CDC doing?
COVID vaccination may lead to postmenopausal bleeding as well as temporary changes in menstruation among younger women..
Dr. Paul Ewald describes how microbes evolve and interact with our immune systems to become more or less virulent.
Understanding innate immunity can help us appreciate how can the immune system overcome viruses, including SARS-CoV-2.
Noting President Trump's list of medications, readers wonder: can melatonin help in treating the coronavirus? It can help with sleep.
Holds on vaccine trials are not unexpected, but they could delay development of an effective protection against COVID-19.
You might imagine your immune system as an army fighting off invaders. What if it behaved more like a peacekeeping force to maintain harmony?
The EPA has just registered nootkatone, a new insect repellent ingredient that discourages ticks as well as mosquitoes.
Public health experts are paying close attention to the spread of a new virus from Wuhan, China. It has already spread to many countries around the world.
A large nationwide study with more than 5 million person-years of follow-up found no connection between measles vaccine and autism in Danish children.
Respiratory syncytial virus can cause a nasty cough. We don't have drugs to treat this problem, but research indicates tea from Japanese honeysuckle helps.
Diseases spread through the bites of ticks and mosquitoes have become three times as common in the last dozen years, according to the CDC.
Studies suggest that drinking the fermented milk product kefir can benefit the immune system and help you recover from an infection more rapidly.
Researchers recommend choosing a repellent that reliably prevents most mosquito bites. Look for one with DEET or oil of lemon eucalyptus.
Public health officials are worried about new cases of a polio-like illness causing paralysis and even death in youngsters in Washington state.
Spironolactone, a diuretic that has been around since 1959, appears to keep Epstein Barr virus from multiplying and may help against other herpes viruses.
The World Health Organization has declared that Zika virus poses a global health emergency as it spreads rapidly to countries in the Americas.
The CDC has expanded its list of countries pregnant women should avoid due to the possibility of Zika virus exposure.
A virus that usually causes symptoms of a common cold may also bring on sudden limb paralysis in some children.
The newly identified Bourbon virus is transmitted by the bites of North American ticks.
An experimental antiviral treatment may be able to help some victims of Ebola virus recover.
Enterovirus D68 starts with innocuous-seeming symptoms like a cold, but it can lead to breathing difficulties, paralysis and even death.
Brincidofovir may work against Ebola virus as well as other life-threatening viral infections like smallpox, adenovirus and cytomegalovirus (CMV).
Doctors misdiagnosed Ebola virus in Dallas hospital because they didn't read the electronic health record carefully enough.
Childhood paralysis resembling polio appears linked to respiratory infection with enterovirus-D68.
A virus is causing serious respiratory infections in children.
A study found that virus spreads incredibly quickly throughout the workplace to any surface people touch.
The nation's parents are understandably scared about a mysteriously spreading virus that is hospitalizing children in worrisome numbers.