Researchers found that during sex, the women burned an average of 3.1 calories per minute, while the men burned 4.2. On the ...

An NIH scientist’s maverick approach reveals legal, ethical, moral, scientific and social challenges to developing potentially life-saving vaccines.

Chemical reactions reflect human dramas, which reflect celestial movements, which reflect the mind of the divine.

Background The likelihood of HIV acquisition is increased following forced vaginal sex. This relates in part to ...

Syphilis can be cured with the antibiotic penicillin G. Syphilis is mainly spread through oral, vaginal, or anal sex. You might not know you have syphilis because its symptoms are often painless.

A syphilis rash often appears as faint or reddish-brown bumps and can be hard to see. The rash usually affects the trunk, palms, and soles but can cover the whole body. Syphilis is known as the "Great ...

In 1494, King Charles VIII of France launched an all-out war against the republics of the Italian peninsula, a watershed moment in history. Within months, 50,000 soldiers from his army had fled, not ...

Correspondence to Dr Justin Penner, Paediatric Infectious Diseases, Imperial College Healthcare NHS Trust, London W2 1NY, UK; justin.penner{at}nhs.net Background The epidemiology of congenital ...