This episode discusses four MMWR reports. First, no new safety concerns have been identified a year after the RSV vaccine was recommended for older adults. Second, in response to New York City's chickenpox outbreak, about 27,000 vaccine doses have been administered to prevent new infections. Third, despite a decrease in reported cases, mosquitoes and ticks continue to spread disease in the U.S. Last, dangerous meningococcal infections after travel to Saudi Arabia highlight the need for vaccination before travel to perform the Umrah or Hajj pilgrimages.