Zika Virus Update: Epidemiology, Sexual Transmission, Pregnancy
By Betsy Todd, MPH, RN, CIC, clinical editor
Mosquito repellant being sprayed on a person’s hand in Brazil. EPA
Zika virus is now being actively transmitted in 42 countries, primarily in the Americas and on islands in the South Pacific. As of April 13th, there had been 358 travel-associated cases reported in the U.S., including 31 pregnant women.
While there are as yet no locally acquired U.S. cases, local transmission has been established in several U.S. territories (primarily, Puerto Rico). Travel-associated cases are expected to continue in the U.S., almost certainly leading to eventual limited local transmission.
Transmission. Most cases of Zika virus infection have been vector-borne—that is, they resulted from the bite of an infected mosquito. […]