fever over or equal 39.5; information has been downloaded from regulatory agency (it-minisal02-833886). this spontaneous report was received from an other health professional and refers to a 1-year-old female patient. no medical history, concurrent conditions, concomitant therapies, previous events/allergies were provided. on 15-sep-2021, the patient was vaccinated with measles, mumps, rubella and varicella (oka-merck) virus vaccine live (rha)(proquad) subcutaneously in deltoid as an inoculation site, lot #u017056, expiration date was not provided, upon internal review, it was established as 31-oct-2022 (dose, concentration, dose number were not reported) indication was not reported, established as prophylaxis. on 18-sep-2021, the patient experienced fever over or equal 39.5. the outcome of fever was reported as recovered on 20-sep-2021. the agency did not provide causality assessment between the event and suspect vaccine. follow-up information has been downloaded from regulatory agency (it-minisal02-833886) on 24-feb-2022. event seriousness were updated to ime and also severity is updated to severe