Concerned about rising cases and spread of Lassa fever, the Nigerian Academy of Science has called on government to declare it a national health emergency.
The World Health Organization has said the coronavirus is not yet a pandemic. That raises a question: just what is a pandemic? An expert explains.
The declaration does not mean the risk to Canadians has changed, but it does mean Canada must step up to help those countries with weaker heath-care systems.
Airport public health officials have got better at screening at ports of entry especially for international arrivals.
Timing is everything when it comes to making a decision about declaring a disease outbreak a public health emergency of international concern.