Millions vaccinated in NJ but how long will protection last? — Top News 4/2

Millions of New Jerseyans have been vaccinated for COVID, but how long will it last?

New Jersey is well on pace to vaccinate 70% of the adult population, estimated at 4.7 million individuals. As of Thursday, 1,630,837 have been fully vaccinated. Another 2,809,654 have had their first shot of the Pfizer or Moderna vaccine, and are awaiting their second dose.

State health officials say 9-in-10 people who get their first shot, do return for the second. By the end of April, the state is on pace to have at least 4,440,491 residents fully immunized. At the current pace, the state could exceed 5 million people fully vaccinated by Memorial Day. But how long will the protection last?

The question of how long you are protected from COVID-19 with the currently approved vaccinations is one we are asked a lot. There has been no easy answer. It could be a few months or a year or longer. In initial clinical trials, immunity lasted at least three months, but that was the time period participants were monitored.

Pfizer has updated their long-term study to say protection lasts at least six months, but again that is the time participants were monitored.

There has been some anecdotal evidence in studies that suggest the vaccines could last up to three years, but no long-term data to support that.

The spectrum of commonly used vaccine in terms of long-term efficacy varies greatly. For example, influenza vaccines protect for only a few months, and an updated vaccine is needed annually. By contrast, the measles vaccine offers lifetime protection.

Most medical experts seem in agreement that the COVID vaccine will be more like the influenza vaccine and require an annual booster. Chunhuei Chi, director of the Center for Global Health at Oregon State University's College of Public Health and Human Sciences, says it "is very likely that for [the] COVID-19 vaccine, given that the length of immunity the vaccine generates is limited, we may have to be vaccinated annually."

White House Chief Medical Advisor Anthony Fauci concurs but says much more study is needed. The CDC is monitoring for what Fauci termed "breakthrough infections," or infections that get past the immune system of someone who has been vaccinated.

“If it looks like after a year and a half, the antibody levels go down and people start to get breakthrough infections," Fauci explains, "then we know that after a year and a half, we probably have to give them a boost.”

The length of immunity could also vary from person-to-person. Dr. Chi says people with a stronger immune system will produce more antibodies and ultimately have a longer lasting immunity.

The good news for those who have been vaccinated, experts say, is that all of the vaccine currently approved provide strong protection from serious illness and are 100% effective at preventing death from COVID-19. Even more critical, doctors say, the vaccines eliminate potential hosts and the ability for the virus to mutate into versions that are resistant to vaccine immunity.

More N.J. Top News:

• A Morristown restaurant owner is suing the state over dining limits.
• A day after Gov. Murphy offered dire predictions of another Summer of COVID, infection metrics fall.
• Reporter fired for offensive caption posts letter of apology.
• More schools are getting kids back in classrooms before the end of the current school year.
• Two South Jersey hospitals ban visitors amid COVID surge.
• Jobless claims spike in New Jersey, especially among the self-employed.
• The smallest of small businesses in New Jersey are now eligible for state pandemic grants.
• A new poll finds a deep partisan divide over Biden's job performance, but R's and D's agree on one thing.
• A repeal of the state and local property tax cap could be tied to Biden's massive infrastructure plan.
• Regal Cinema is reopening some of its theaters around the country today but not in New Jersey.
• New Jersey lawmakers fail to hold power companies accountable for poor service after power outages.