Chinese researchers have discovered a new type of swine flu that can infect humans and has the potential to cause a future pandemic, according to a study released on Monday, though scientists have ...

Most pandemic viruses that have jumped from animals to humans do not show signs of special adaptations to infect people, ...

Over the weekend, health officials in Spain reportedly informed the World Health Organization (WHO) of a possible human case of swine flu that may have been caused by person-to-person transmission.

Learn how scientists identified genetic clues that distinguish natural viral spillovers from lab-handled viruses — and why one historical outbreak of 1977 surprised them.

A new University of California San Diego study published in Cell challenges a long-standing assumption about how animal viruses become capable of sparking human epidemics and pandemics. Using a ...

Contrary to prevailing belief, an evolutionary analysis finds no evidence that most viruses with epidemic or pandemic ...