![]() ![]() Getting your recommended boosters can help keep you better protected against COVID-19. ![]() This may include booster doses as you become eligible for them. Once you’ve completed your primary vaccine series, it’s important to keep up-to-date with your shots. But if you have a weakened immune system, you may need an additional dose 28 days after your second shot to be fully vaccinated. How long after receiving the second dose are you protected?Īccording to the CDC, you’re considered to be fully vaccinated 2 weeks after your second dose. But a booster dose is recommended at least 2 months later. The Johnson & Johnson vaccine, on the other hand, only requires one shot for the primary vaccine series. The main difference is timing - you’ll wait 3 weeks before your second Pfizer dose and 4 weeks before your second Moderna dose. The mRNA vaccines, Pfizer and Moderna, both require two doses for full protection. The CDC currently recommends the Pfizer and Moderna vaccines over the Johnson & Johnson vaccine in most situations. They’ve also authorized the Johnson & Johnson COVID-19 vaccine. The FDA has approved the Pfizer and Moderna COVID-19 vaccines for use in the U.S. ![]() Do all available COVID-19 vaccines require two doses? And some people don’t have any side effects at all. So if you’re concerned about side effects, keep in mind that they can be a sign that the vaccine is working and will typically resolve within a few days. That said, it’s still recommended that you get the second shot. In this case, your first dose is acting like your second dose. If you’ve already had COVID-19, you might actually react more strongly to the first dose because your body has already seen the spike protein from your previous infection. Because of this, the side effects from the second shot can be stronger in some people. When you get your second shot, your body recognizes the spike protein from before and reacts quickly. But if you feel fine after your dose, that doesn’t mean that the vaccine isn’t doing its job. This is typical - it’s called reactogenicity, and it can be a sign that the vaccine is working. Why is the second shot worse?Īs your immune system is mounting a response after your first dose, you might get a headache, feel tired, or even develop a low fever. And like the COVID-19 vaccines, each dose is spaced apart safely so we get optimal protection. In fact, many of the vaccines recommended during childhood require at least two doses. It isn’t unusual for vaccines to require multiple doses for us to get the full benefit. This causes an even stronger reaction, resulting in a higher level of protection against COVID-19. If you haven’t been exposed to the virus before, this will be the first time your body sees the protein, and your immune system will be alerted to take care of it.īut when you get your second dose, your body already knows that the spike protein is something that doesn’t belong. It works by instructing your cells to make the coronavirus spike protein - an important part of the virus that helps it infect our cells. Why do COVID-19 vaccines require two shots?įor the mRNA (messenger RNA) vaccines, the first vaccine dose is meant to prime your immune system. Here we’ll cover what you need to know if you’ve skipped your second shot and what steps you can take to get back on track. Either way, you won’t get the full benefit of the two-dose series if you skip your second shot. For others, it may be the perception that one dose is enough because they caught COVID-19 between shots. ![]() Over 60% of the population is now fully vaccinated, but there are still people who may have who have skipped their second dose - meaning that they’re only partially protected.įor some, it may have been a bad experience with their first dose. Since December 2020, over 500 million doses of the COVID-19 vaccines have been administered in the U.S. ![]()
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