#MODERNA COVID VACCINE AFTER EFFECTS TRIAL#

As a science communicator, he's noticed more people are paying attention to science news, especially when it comes to vaccine development. Haydon said he's been amazed at the level of engagement of people following his story on social media. People have followed along with Haydon's experience on Twitter Again, he recovered after about 24 hours of side effects.

He had some arm pain the day he got the booster shot, as well as a low-grade fever, nausea, aches, and fatigue that lasted into the next day. Fortunately, his reaction wasn't nearly as severe as his second-shot side effects - probably similar to what most people are experiencing after their second dose of the vaccine nowadays. Haydon got the shot on April 1, nearly a year after his first dose of the vaccine. He got an experimental booster made up of 25 micrograms of the Moderna vaccine that's currently in use and 25 micrograms of a new vaccine tailored to the B.1.351 variant that was first spotted in South Africa. 'There are two questions that the researchers are looking at: we don't know whether it's safe to take a booster at all, and we also don't know what the effect of taking a slightly modified version of the vaccine is going to be,' Haydon said.

#MODERNA COVID VACCINE AFTER EFFECTS TRIAL#

The researchers were looking into the safety of a possible booster shot, and the early trial participants were their best hope for a long-term study. 'We learned about the dose of the vaccine that's most effective and what dose is too high, and that's going to go on to benefit a lot of people who end up taking a safer dose of the vaccine.' Haydon got an experimental third shot this monthĪbout three months ago, Haydon was contacted by the team running the Phase 1 trial. 'As bad as it was to go through, it still is comforting to me to know that it wasn't for nothing,' Haydon told Insider. Even after the brutal 24 hours, Haydon said he didn't regret participating in the trial. The Moderna researchers would later decide that a medium dose provided the same protection with less severe side effects than what Haydon experienced. And when he woke up the next day, he was 'basically fully recovered.' By that evening, his fever was climbing down and the headache and nausea were getting less intense. At home, he threw up and fainted shortly after, but opted not to return to urgent care.

He was eventually discharged and went home to catch up on the sleep he missed.īut Haydon still felt ill when he woke up in the middle of the next day. Haydon said he felt 'a lot better' after the two hours he spent at urgent care. He was advised to go to urgent care, where he received IV fluids and Tylenol to bring his fever down. His side effects were bad, but helped inform Moderna about dosingĪfter waking up in the middle of the night with a high fever, nausea, headache, and muscle aches, Haydon called the 24-hour hotline set up for trial participants - which was open 'in case anything got bad, and this was kind of bad.' Account icon An icon in the shape of a person's head and shoulders.

Moderna covid vaccine after effects