Influenza A is the type of flu virus that is most often the cause of widespread epidemics.

Shrinking seas caused widespread epidemics and eutrophication, thus hastening the continuing need to get oxygen from the air.

After the battle was won, the inability to contain enemies who escaped death led to widespread epidemics affecting not only the enemy forces, but also surrounding regions' inhabitants.

Only toxigenic strains of serogroups O1 and O139 have caused widespread epidemics.

This includes widespread epidemics such as malaria and hookworm infections as well as exceedingly rare diseases like lagochilascaris minor.

Other widespread epidemics occurred in 1545-48, 1576-81, and 1629-31, with deadly local outbreaks adding to the losses.

Alongside HIV and malaria, tuberculosis is one of the most widespread epidemics in the world. Around one third of the world's population is infected.

Why do we have to wait until after terrorism, accidents or naturally occurring dangers create widespread epidemics from Plum Island?

Meanwhile, countries that have long coped with dengue are experiencing increasingly widespread and virulent epidemics of the disease, according to the World Health Organization.