Loved ones of 20-year-old Isaac Wilkie posted pictures of him Thursday evening near his home in Harlem.
Many doctors and scientists were reeling after President Trump went on TV to insist that pregnant women should never take Tylenol and revive debunked theories about vaccines and autism.
Studies on this question have not shown a direct cause and effect.
Autism is being diagnosed earlier in young children, especially in boys, according to a major new analysis of medical records published on Tuesday.
The database - which HHS said will draw from insurance claims, medical records, and data from wearable technology such as smartwatches - is one of the first steps in HHS Secretary Robert F. Kennedy Jr.'s bid to find the causes of autism "by September."
Kennedy has prioritized autism as one of the chronic illnesses he's determined to tackle in his aim to "Make America Healthy Again."