The virus is evolving, and the newest version spreads more often through heterosexual populations. Sweden reported the first case outside Read More

The epidemic is concentrated in the Democratic Republic of Congo, but the virus has now appeared in a dozen other Read More

The sometimes fatal condition, MIS-C, may be driven in part by a misdirected immune system, a new study finds.Read More

A common antibiotic, doxycycline, greatly reduced cases of syphilis, gonorrhea and chlamydia when taken every day, a study found.Read More

A new study adds to evidence that the shots can reduce the chances of developing one of the most dreaded Read More

Even as the H5N1 virus evolves, gaps remain in the nation’s contingency plans for human testing, scientists say.Read More

Hoau-Yan Wang, a professor at City College, published studies supporting simufilam, now in advanced clinical trials.Read More

As the virus continues to mutate, the C.D.C. urged Americans to roll up their sleeves again for annual Read More

Among Americans aged 60 to 74, only those with certain health conditions need to receive the shots, the agency concluded.Read More

There is no guarantee that a person-to-person virus would be benign, scientists say, and vaccines and treatments at hand may Read More