Age: 0.92
Sex: M
Vaccine: MMR, UNK
Symptoms: SARS-CoV-2 test positive
Clinical narrative: At the first dose he lost his language and communication for 4 years/ Then couple months later, totally lost his language/he was diganosed with pervasive develpmental disorder not otherwise specified (PDDNOS)  which is on the spectrum of autism.; Peanut allergy; Also had a rash on his chest and stomach; This spontaneous report was received from a consumer via Pfizer and refers to an 11-month-old male. On an unspecified date, the patient tested positive for COVID-19. Historical drugs included Paxlovid and influenza vaccine (SWINE FLU VACCINE). He presented peanut allergy, and he was also allergic to: ciprofloxacin, amoxicillin (+) clavulanic acid (AUGMENTIN), ciprofloxacin, codeine, omeprazole (PROTONIX), duloxetine hydrochloride (CYMBALTA), gabapentin (NEURONTIN), tramadol, ketorolac tromethamine (TORADOL), and "Mideton".   On an unknown date in 2010 (reported as either May 2010 or June 2010), the patient started therapy with measles, mumps, and rubella (wistar ra 27-3) virus vaccine, live (M-M-R II) subcutaneous injection, anatomical location reported as "maybe in the right arm or thigh" administered as prophylaxis (strength, dose, route of administration, frequency, lot number and expiration date were not provided); and on an unknown date in 2011 (reported as between April 2011 or May 2011), he was also vaccinated with influenza vaccine (SWINE FLU VACCINE), nasally administered (strength, dose, frequency, lot number and expiration date were not provided).  On an unknown date, after the first administration of the vaccine measles, mumps, and rubella (wistar ra 27-3) virus vaccine, live (M-M-R II), the patient lost his language and communication (reported as for 4 years) and he also presented rash in his chest and stomach (rash); therefore, he was put in an autism class. He was still presenting peanut allergy (food allergy), which was reported as still severe. Couple months later, he totally lost his language; therefore, the patient was sent to a child development center, and it was evaluated that it was not autism, since he was diagnosed with Pervasive Developmental Disorder Not Otherwise Specified (PDDNOS), which was on the spectrum of autism (Autism spectrum disorder). The patient was required with 20 hours a week, 5 times a week, every day, for 4 hours of teaching with 4 different teachers. The physician advised the patient to not receive the second dose of measles, mumps, and rubella (wistar ra 27-3) virus vaccine, live (M-M-R II). By the reporting time, the patient had not recovered from the event Food allergy. The outcome regarding the event autism spectrum disorder and rash was not provided.   The action taken with the suspect vaccine measles, mumps, and rubella (wistar ra 27-3) virus vaccine, live (M-M-R II) was withdrawn.   The causal relationship between autism spectrum disorder, rash and food allergy with measles, mumps, and rubella (wistar ra 27-3) virus vaccine, live (M-M-R II) was not reported.   Upon internal review, the event autism spectrum disorder was determined to be medically significant. The reporter considered the event food allergy to be life threatening.