Piotr Naskrecki / Yellow Fever Mosquito (Aedes aegypti) female feeding on human blood, Gorongosa National Park, Mozambique

Jabruson / Hammer Headed bats (Hypsignathus monstrosus) in gloved hand - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 12...

Jabruson / Western Gorilla (Gorilla gorilla) silverback skull with butterfly (Belenois theszi). Gorilla diedd from the Ebola Virus, which killed 128 people in the region in 2003 and in 2005 killed 95% of the Gor...

Ann & Steve Toon / Elephant (Loxodonta africana) bull feeding on fever tree (Vachellia xanthophloea), Zimanga private game reserve, KwaZulu-Natal, South Africa, June.

Heidi & Hans-Juergen Koch / Yellow Fever Mosquito (Aedes aegypti) hatching from pupa, native worldwide

Steve O. Taylor (GHF) / Straw-coloured fruit bats (Eidolon helvum), thought to be the natural reservoir of the Ebola virus, for sale in Brazzaville market, Republic of the Congo, 2013.

Inaki Relanzon / Traditional Chinese medicines made from Moon bear (Ursus thibetanus) bile which is used to various ailments, such as fever, gall stones, liver problems, heart disease and eye irritations, China, Septe...

Jen Guyton / Mussicadzi River, lined by Fever trees (Vachellia xanthophloea) in Gorongosa National Park, Mozambique.

Jen Guyton / Vervet monkey (Chlorocebus pygerythrus) female cradling her young in a Fever tree (Vachellia xanthophloea) near Lake Manyara National Park, Tanzania,

Jen Guyton / Vervet monkey (Chlorocebus pygerythrus) baby sitting in a fever tree (Vachellia xanthophloea), Lake Manyara National Park, Tanzania.

Jen Guyton / Fever trees (Vachellia xanthophloea) in Gorongosa National Park, Mozambique.

Ingo Arndt / Fakahatchee grass (Tripsacum dactyloides), Everglades, Florida, USA. January.