The Tesla founder added: “First mRNA booster was ok, but the second one crushed me.”
Musk’s posts came after Rasmussen Reports tweeted 12 million people may have experienced “major side effects” after getting the vaccine.
According to the Center for Disease Control and Prevention (CDC) cases of myocarditis are a “rare risk” for those who receive mRNA COVID-19 vaccines.
“These rare cases of myocarditis or pericarditis have occurred most frequently in adolescent and young adult males, ages 16 years and older, within 7 days after receiving the second dose of an mRNA COVID-19 vaccine (Pfizer-BioNTech and Moderna). There has not been a similar reporting pattern observed after receipt of the Janssen COVID-19 Vaccine (Johnson & Johnson),” the CDC says on its website.