Climate change is anticipated to cause a rise in the incidence of several diseases in sub-Saharan Africa.
Timing is everything when it comes to making a decision about declaring a disease outbreak a public health emergency of international concern.
Cholera kills fast, and outbreaks are common in war-torn regions and after natural disasters where clean water is scarce. A new strategy to prevent cholera infections is a 'cocktail' of live virus.
The flood waters caused by Cyclone Idai have receded. But in some ways, the problems for many of the countries affected, are just beginning.
Gene sequences can be manipulated to prevent certain diseases and improve public health.
In the fight against cholera, new research in the DRC suggests that the rehabilitation of water networks would be more sustainable than other interventions whose effectiveness is debatable.
For many health professionals, daily practice increasingly resembles trench warfare, which took a grave toll on WWI's soldiers.
Yemen's civil war is a stew of local and foreign interests, from Washington, Saudi Arabia to Iran. And the latest battle may cost the lives of hundreds of thousands of civilians, if not millions.
Shared toilets have been shown to be linked to poor health outcomes.
The health challenges that Nairobi can expect in the wake of heavy rains are largely preventable.
The statistics point remorselessly towards obesity being a symptom with an underlying social cause. That should completely change the approach to dealing with it.
771,945 have been infected.
Why are some animals resistant to waterborne disease? A reader wants to know.
Many states in Nigeria are reeling from cholera outbreaks. They need better health and sanitation infrastructure to disrupt transmission of the bacteria which cause the disease.
Vast amounts of standing water in Houston and other hurricane-flooded areas are dangerous not only because of toxins. The water is a dangerous breeding ground for mosquitoes that transmit Zika.
Surviving a hurricane in poor countries such as Haiti is no guarantee of surviving the secondary problem of cholera.
Foreign aid can harm as well as help.
Cholera is caused by a lack of access to clean drinking water and unhygienic conditions. Misuse of antibiotics makes it difficult and expensive to treat outbreaks.
Despite being so small they can't be seen with the naked eye, pathogens that cause human disease have greatly affected the way humans live for centuries.
Here we explore our past and present struggles with the most significant infectious diseases human beings have faced.