Researchers developed a new mouse model that replicates long COVID-19 more accurately than current models. Their findings could lead to new treatments.

Older adults are at risk for contracting STDs – not only because of stigma and infrequent condom use, but also because of physical changes due to aging.

Some of the infections are showing an increased resistance to antibiotics.

The wounds contain black and yellow dead tissue and tunnel deep into the skin. Deep stigma around them can make getting treatment difficult.

A new study finds the risks of developing long COVID declined over the first two years of the pandemic. But unvaccinated adults were more than twice as likely to get long COVID compared with those who were vaccinated.

Reactions like disgust are part of the behavioral immune system that helps you avoid disease. Usually conservatives are more fearful of contamination – but something unusual happened during COVID-19.

Syphilis cases have increased 30% among 15- to 24-year-olds in Philadelphia since 2019, while cases of gonorrhea are up 18%. Chlamydia cases have decreased but remain high.

People with schizophrenia are more likely to have DNA from bacteria associated with "cat scratch fever" in their blood, a study finds.

An expert has answers for you about dogs and leptospirosis, including how to prevent dogs from getting it and what's next if they do.

Human factors − such as how people produce food and how they organize themselves and live together − influence disease outbreaks.