First description of Zika virus, an arbovirus native to Africa. The authors named the virus after the Zika forest in Uganda, where they were searching for Yellow Fever. Instead they isolated a new virus in samples taken from a captive sentinel Rhesus monkey. The authors were slow to publish their work; they first isolated the virus in 1947 and again in 1948.

Dick's second paper on the Zika virus, immediately following his first paper in the same volume of the same journal (see no. 7864). First statement that the Aedes aegypti mosquito is the vector of transmission of the Zika virus. The author trapped the mosquitos on a tree platform in the area of the Zika forest where the viral infections occurred, and traced the virus to the mosquitos.

(Thanks to Juan Weiss for this reference and its interpretation.)