Since December, 2018, the U.S. Navy warship Fort McHenry which was deployed to the Persian Gulf, has been quarantined, stranded at sea because of a Viral Mumps Outbreak that has stricken 27 sailors and Marines. All service members on the ship had been vaccinated with the MMR — measles/mumps/rubella—vaccine, but the vaccine is defective. The mumps takes 25 days to incubate. Continue reading MMR Vaccine Caused Viral Mumps Outbreak On Board | US Navy