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Swine Flu (H1N1) Message Board
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Old 11-20-2009, 08:12 AM   #1
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H1N1 Flumist recipients spread H1N1 to others

Many internet sources state:
Quote:
If you take the H1N1 FluMist, you will in fact become a carrier of the H1N1 flu. Information on this drug states that you can and will shed the virus for up to 21 days. That means as you are visiting with your elderly family members, or shopping in the isles of your grocery store or sitting in church with young children and people with immune problems, YOU are going to be shedding the virus H1N1 germs.
Just as I have conceded to my fears of having my 9yo receive this FluMist vaccine. Concern for myself and elderly family gives further pause for fear of infecting others through my prevention efforts. Especially considering planned family gatherings next week.

Is this more fear mongering?

I have heard the inverse to this message, that H1N1 FluMist recipients spread the weakened virus just enough to provide immunity benefits to others.

From a small group study:
Quote:
With documented transmission of one Type B in one placebo subject and possible transmission of Type A viruses in four placebo subjects, the probability of acquiring a transmitted vaccine virus was estimated to be 2.4% (95% CI: 0.13, 4.6), using the Reed-Frost model.
The duration of FluMist vaccine virus replication and shedding have not been established.
Vaccine recipients or their parents/guardians should be informed by the health care provider that Influenza A (H1N1) 2009 Monovalent Vaccine Live, Intranasal is an attenuated live virus vaccine and has the potential for transmission to immunocompromised household contacts.

Last edited by CajunWon; 11-21-2009 at 08:23 AM.

 
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Old 11-20-2009, 10:31 AM   #2
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Re: H1N1 Flumist recipients spread H1N1 to others

I received the FluMist myself. I work in a hospital, and all the nurses and doctors I have talked to said that the only people that can catch the flu from contact with someone that received the FluMist are those with severly compromised immune systems. Just don't go visit anyone that had a recent bone marrow transplant, or anyone else that pratically has to live in a bubble, and everything will be fine.

 
Old 11-20-2009, 11:29 AM   #3
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Re: H1N1 Flumist recipients spread H1N1 to others

WOW!everything you said sounds right,that means the government is acually spreading the virus more!I am going to mention this in an email to my local news and see if I get a response.I have the h1n1 now its been 5 days now and I have bodyaches and a low fever and my doctor put me on tamiflu asap because I have chronic bronchitis and copd.So far my breathing has been good.But like you I am worried about everyone getting sick from those who had the mist.No one in my family got the vaccine because they are worried of the safety of it,and all my grandchildren caught it already from school and they did fine.I live in wisconsin and it is spreading like fire everywhere.

 
Old 11-21-2009, 08:21 AM   #4
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Re: H1N1 Flumist recipients spread H1N1 to others

MOre info here: http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5819a1.htm
Quote:
Although the number of sera from children tested in this analysis was small, results indicate that U.S. children are largely serologically naÔve to the novel influenza A (H1N1) virus and that vaccination with seasonal TIV or LAIV does not elicit any measurable level of cross-reactive antibody to the novel virus. Results among adults suggest that some degree of preexisting immunity to the novel H1N1 strains exists, especially among adults aged >60 years.
The preceding quote from CDC is the basis by which they(?) state that children 2-9yo should receive a booster vaccination in ~ 1 month from first dose. And is quoted within the hand-out (out of context imo). But the above study was to determine
Quote:
whether receipt of seasonal influenza vaccine might offer any protection against the novel influenza A (H1N1) virus
and says nothing about the need for booster before immunity benefits are achieved from H1N1 vaccine. I'm thinking I've put my 9yo (10 in 3 weeks) in enough risk with this one FluMist H1N1, in addition to the Seasonal flu vaccine shot 5 weeks ago. That this study does not even suggest he needs a booster to achieve immunity.
Caveat: I have no education in this field.

Last edited by CajunWon; 11-21-2009 at 08:25 AM.

 
Old 11-21-2009, 06:58 PM   #5
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Re: H1N1 Flumist recipients spread H1N1 to others

The nasal mist vaccine is a live weakened virus. So by getting this vaccine, you are getting a weak version of the flu.

This means that it is at least theoretically possible to spread the virus to others. However, as this is the weakened vaccine version of the virus, the effect of giving enough virus to others would be to vaccinate the others (although if the others are immunocompromised for some reason such that they are advised against receiving even the weakened vaccine version of the virus, that might not be that great for them).

With live weakened viruses, there is a very small risk that they could mutate back to a more dangerous form.

 
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