November 11, 2020 — Some of the first volunteers to get Pfizer’s COVID-19 vaccine said the side effects felt like suffering a “severe hangover” after the injection.
Glen Deshields, a 44 year-old volunteer from Austin, Texas, said he suffered symptoms like a “severe hangover,” including a headache and arm pain for several days after his first shot.
He said the second shot produced symptoms like a “mild hangover.”
Later, he said an antibody test was positive for COVID-19, making him confident that he received the experimental coronavirus vaccine.
Another volunteer, a 45 year-old woman from Missouri, suffered a headache, fever, muscle pain, and body aches after her 1st shot in September. Those symptoms became more severe after her 2nd shot.
The symptoms are similar to what many people report after flu shots.
More than 43,500 volunteers in 6 countries have participated in phase-3 trials run jointly by Pfizer and BioNTech.
The volunteers did not know if they got the experimental vaccine or a placebo because the studies were double-blinded.
Earlier this week, Pfizer and BioNTech announced that their coronavirus vaccine is 90% effective in protecting people from being infected with Sars-CoV-2, the virus that causes COVID-19.
More than 200 coronavirus vaccines are currently being tested worldwide, including 40 candidates currently in clinical trials.