Zika Virus 2022

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Last reviewed
September 7, 2022

Zika Virus 2022

Zika is a viral disease transmitted by mosquitoes of the genus Aedes caused by the Zika virus (ZIKV), says the World Health Organization (WHO). About 25% of infected people may develop symptoms, but the illness is usually mild, with symptoms lasting between two and seven days.

Zike Virus Cases in 2022

In March 2022, the CDC issued a Zika disease Level 2 Travel Advisory for Uttar Pradesh, India. Puerto Rico's Department of Health Arboviral Disease Report indicates (1) confirmed and (44) probable Zika cases were reported in 2021. In addition, county-level data from 2015 to the present are posted by the U.S. CDC.

In 2020, the U.S. CDC confirmed (4) travel-associated and (57) Zika cases in U.S. territories. In addition, locally acquired cases were reported from Florida and Texas in 2016 and 2017.

Furthermore, as per Brazilian authorities, since 2014, over 1,638 babies have been born with microcephaly-related defects.

Zika Virus and Microcephaly

Microcephaly is a condition where a baby's head is much smaller than expected. During pregnancy, a baby's head grows because the baby's brain grows. However, microcephaly can occur because a baby's brain has not developed properly during pregnancy or has stopped growing after birth, which results in smaller head size.

Microcephaly can be an isolated condition, meaning that it can occur with no other significant congenital disabilities or in combination with other major birth defects.

Severe microcephaly is a more serious, extreme form of this condition where a baby's head is much smaller than expected. Severe microcephaly can result because a baby's brain has not developed properly during pregnancy, or the brain started to develop correctly and then was damaged at some point during pregnancy.

Zika Virus History

The Zika virus was first isolated in 1947 in the Zika forest in Uganda (Africa). Since then, Zika has caused small, sporadic outbreaks in Africa, Asia, and South America. In 2007, a large epidemic was described on the Island of Yap (Micronesia), where about 75% of the population was infected. In 2014, Chile notified the WHO of indigenous transmission of Zika virus fever on Easter Island. Then, in May 2015, the public health authorities of Brazil confirmed the transmission of the Zika virus.

Zika Vaccine Candidates For 2022

As of September 2022, there are no U.S. FDA-approved Zika vaccines. However, several vaccine candidates are conducting clinical trials listed on this webpage.