Understanding the many factors that may play a role in spillover of pathogens from bats to humans requires systematic surveillance of bat populations.
The rapid rise in cancer cases can be attributed to major societal and environmental changes that have occurred in the past few decades.
The discovery of a new strain of HIV gives scientists a better understanding of the virus.
The study found that ex-smokers had four times the amount of "normal" protective cells than smokers.
One of the dangers of the new coronavirus is that there is no treatment – and no vaccine. But researchers had already been at work on vaccines for close-related viruses.
People seeking mental health care still encounter stigma, even within the health system. New tools for teaching and sharing information may help address it.
Airport public health officials have got better at screening at ports of entry especially for international arrivals.
Measles infection can be easily managed with prompt health care and symptom management. But without care, mild symptoms can turn into life threatening secondary infections or long-term effects.
The Nigeria Centre for Disease Control says it will use lessons from the Ebola outbreak to strengthen its risk communications capacity.