Promising research into long-term effects of vaccine

New findings could mean that people who got an mRNA vaccine, like the Pfizer and Moderna vaccines, might not need a booster shot every year - even after antibodies start to fade.
1:44 | 06/28/21

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Transcript for Promising research into long-term effects of vaccine
Thank you. To the coronavirus tonight. A new study suggests the pfizer modern vaccines might offer protection for years even without a booster shot. But variant remain a wild card. The delta variant now identified in 49 states, and especially dangerous to those who are not vaccinated. Tonight, 179 million people have had at least one dose, that's 63% of everyone 12 years and older. ABC is at the CDC. Tonight, promising research suggesting the pfizer and modern vaccines could offer protection for years. Even after antibodies start to These data suggest that some level of immunity will be long lasting. How that translates into actual protection, I think, remains to be determined. The few findings could mean people who got an mrna vaccine might not need a booster shot every year. But the wild card is the ever-changing virus. The highly contagious delta variant is spreading to 49 states, and threatening the unvaccinated. Those individuals that we are still seeing that are not vaccinated and taking a lot longer hospital stay. Hospital admissions now climbing in at least five states with lower vaccination rates. After putting off the vaccine, covid landed Luis and his wife Patty in a Missouri hospital. I hope people do think about getting the vaccination. It's your prerogative, but I wish I had done it to just avoid this. Now, both are at home on a slow mend. And Luis tells me his wife is still on oxygen at home. As for booster shots, health experts say those at most risk would be the first ones to get them if needed. Thank you. Overseas tonight, president Biden ordering a second round of

This transcript has been automatically generated and may not be 100% accurate.

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