Japanese encephalitis virus (JEV), the causative agent of Japanese encephalitis (JE), affected an estimated 69,000 individuals in 2024.
Although JE is vaccine-preventable, it remains endemic in 24 countries and territories across Asia and Oceania, where it has a mortality rate of about 20%.
Since its identification in Japan in 1871, the transmission cycle of JEV has involved pigs and birds as amplifying hosts and mosquitoes as vectors.
Japanese Encephalitis Virus Spread By Mosquitoes, Pigs, and Sheep
New Vaccine Recommendations Published
In the United States, the Advisory Committee on Immunization Practices (ACIP) develops recommendations on how to use vaccines to control disease. Once adopted, these ACIP recommendations become the official policy of the U.S. Centers for Disease Control and Prevention (CDC).
As of May 15, 2025, the CDC published a user-friendly listing of the last five ACIP meeting recommendations.
FDA Gives Full OK to Novavax COVID Shot for High-Risk Groups
By I. Edwards HealthDay ReporterMONDAY, May 19, 2025 (HealthDay News) — The U.S. Food and Drug Administration (FDA) has granted full approval to Novavax’s COVID-19 vaccine, but only for certain …