Pathogens are infectious agents, such as a bacterium, virus, fungus or parasite, that cause disease when they colonize a host organism. Latest Research and Reviews.

Scientists at Roche and Harvard University have discovered an entirely new class of antibiotic that can kill a highly drug-resistant ‘superbug’ with a mortality rate that can be upwards of 50% ...

7-year-old Sasha has always known she was a little girl, even though she was born a boy. As society fails to treat her like the other children her age - in her daily life at school, dance lessons or ...