It seems reasonable. I think at this point it's too early to tell

what the periodicity of boosters will be though. There are many factors there. What I can think of are: the immune response triggered by the vaccine and mutations.

The first would be the number of T-Cells generated due to the vaccine. That can fall anywhere. With Hep B, studies show memory cells don't decrease if the vaccine was properly administered, 3 doses, in infancy. With Tetanus, CDC recommends 10 years while other countries recommend 2 boosters before 20 years of age. With one type of polio vaccine it's 6 months.

The flu is yearly because of mutations.

So where does SARS-CoV-2 fall? I have no idea.

In response to this post by HokieForever

Posted: 09/23/2020 at 10:59AM

On the vaccine front, JNJ enters Phase III testing. -- Hokie360 09/23/2020 09:13AM

I listened to a panel of speakers a couple of weeks ago -- GreenvilleVT 09/23/2020 10:59AM

I was told to expect shortages on syringes -- No Clue 09/23/2020 1:00PM

They talked about the advantage of one vaccine was no refrigeration needed. -- Hokie360 09/23/2020 12:34PM

Lets make sure the Hokie football and basketball players are "essential" ** -- EDGEMAN 09/23/2020 11:15AM

If they were, they wouldn't have 14 day quarantines for contact tracing. ** -- vthokieq 09/23/2020 11:24AM

Until the vaccine hits the market... ** -- EDGEMAN 09/23/2020 11:28AM

Still curious how long it lasts, current body response is 90 days -- HokieForever 09/23/2020 09:22AM

Everyone below, validity of this article? -- HokieForever 09/23/2020 10:06AM

It seems reasonable. I think at this point it's too early to tell -- jmanatVT 09/23/2020 10:59AM

Better way to say it then I did, +1 ** -- HokieForever 09/23/2020 11:15AM

Where are you getting 90 days from?? -- VTSnake 09/23/2020 10:18AM

CDC Guidance, why football teams, et. al following it -- HokieForever 09/23/2020 10:37AM

I see nothing in there about 90 day immunity. -- VTSnake 09/23/2020 10:43AM

Read the Note: at the top or the quarantine requirements -- HokieForever 09/23/2020 10:45AM

I love the "up to" part. So it really can be anything less than 3 months, ** -- 48zip 09/23/2020 10:52AM

That doesn't mean they're only immune for 90 days. ** -- vthokieq 09/23/2020 10:49AM

There have been tests showing antibodies gone after 90 days hence -- HokieForever 09/23/2020 11:15AM

This has been explained already. Nevermind. ** -- vthokieq 09/23/2020 11:17AM

Yes understand the T-cell argument I am saying why the guidance is 90 days ** -- HokieForever 09/23/2020 11:18AM

I don't think anyone questions where the guidance is coming from. -- vthokieq 09/23/2020 11:23AM

Isn't the 90 day thing old news? -- VTSnake 09/23/2020 09:58AM

There's more to immunity than antibodies (Same as below with sciency link) -- jmanatVT 09/23/2020 09:54AM

Just my thought process here (didn't stay at a Holiday Inn Express) -- BTHokie 09/23/2020 09:35AM

Agree. The 90 days isn't a definitive time frame for immunity... -- vthokieq 09/23/2020 09:45AM

My hope, too. At least lessen impact of future variants, perhaps. ** -- HokieDiver 09/23/2020 09:44AM

It seems reasonable. I think at this point it's too early to tell

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