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Adverse reactions to the Swine Flu vaccine soar.
Glaxo Smith Kline have recalled a batch of Swine Flu vaccines containing around 170,000 vaccines in Canada, due to a larger than expected number of adverse reactions. GSK say that they expect to have reports of a severe adverse reaction in a approx 1 in every 100,000 persons receiving the vaccine, however, with this particular batch they were seeing about 1 in every 20,000 after six people suffered anaphylaxis shock after having the vaccine.
Glaxo Smith Kline have recalled a batch of Swine Flu vaccines containing around 170,000 vaccines in Canada, due to a larger than expected number of adverse reactions. GSK say that they expect to have reports of a severe adverse reaction in a approx 1 in every 100,000 persons receiving the vaccine, however, with this particular batch they were seeing about 1 in every 20,000 after six people suffered anaphylaxis shock after having the vaccine.
Dr. Joel Kettner, Manitoba's Chief Medical Officer of Health, urged people not to be alarmed, noting the anaphylaxis reactions were short-lived and all the patients recovered.
Earlier this week, the country's chief public health officer, Dr. David Butler-Jones, noted that of the 6.6 million doses of H1N1 vaccine given so far to Canadians, there have been 36 serious adverse reactions reported.
Originally posted by Dnevnoi
The percentage of people who had adverse reactions is less than 1%. Really there is clearly nothing to worry about.
Originally posted by Dnevnoi
Anaphylaxis is not adverse, it is never considered an "adverse" reaction. You may not have an egg allergy when you eat eggs but it is different when its in the blood stream.
CDC: Vaccine Side Effects, Adverse Reactions...
This report provides updated information concerning the potential adverse events associated with vaccination for hepatitis B, poliomyelitis, measles, mumps, diphtheria, tetanus, and pertussis.
These changes include information on the following vaccines and the possible adverse events associated with their administration:
* Hepatitis B vaccine and anaphylaxis;
* Measles vaccine and a) thrombocytopenia and b) possible risk for death resulting from anaphylaxis or disseminated disease in immunocompromised persons;
* DTP and chronic encephalopathy; and
* Tetanus-toxoid-containing vaccines and a) GBS, b) brachial neuritis, and c) possible risk for death resulting from anaphylaxis.
Originally posted by Dnevnoi
Actually only 100,000 have been recalled and the 170,000 you mention have been SET ASIDE. Next time use a Canadian source instead of an American source if you want to get an actual image of what's going on in Canada.
Originally posted by Dnevnoi
And really, the adverse reactions are quite rare...
Originally posted by quackers
For real? I guess maths ain't your strong point.
1% =1:100
0.00001% = 1:100000
By your own words, you are saying that cases of adverse reactions 1000 times above normal, is normal. I don't see how you can come to that conclusion.
less than 1%
Originally posted by loam
See for example the term "adverse" and "anaphylaxis" used in connection with other vaccines:
CDC: Vaccine Side Effects, Adverse Reactions...
This report provides updated information concerning the potential adverse events associated with vaccination for hepatitis B, poliomyelitis, measles, mumps, diphtheria, tetanus, and pertussis.
These changes include information on the following vaccines and the possible adverse events associated with their administration:
* Hepatitis B vaccine and anaphylaxis;
* Measles vaccine and a) thrombocytopenia and b) possible risk for death resulting from anaphylaxis or disseminated disease in immunocompromised persons;
* DTP and chronic encephalopathy; and
* Tetanus-toxoid-containing vaccines and a) GBS, b) brachial neuritis, and c) possible risk for death resulting from anaphylaxis.
You see a meaningful difference between 'recalled' and 'set aside'?
Moroever, you have the math completely wrong. 170,000 represent the approximate number of doses comprising the batch of concern. Any lesser number found in various sources (including Canadian ones ) is an approximation of the remaining doses from the batch in question which had not been already administered.
Except in the case of this particular batch, which obviously Glaxo had also apparently agreed was inappropriate, as evidenced by their reaction to the issue.
On Thursday, GlaxoSmithKline asked health officials to hold back a batch of swine flu vaccine that appears to be causing higher rates of severe allergic reactions.
The company said it's a precaution, pending an investigation. Manitoba health officials say they have noticed severe allergic reactions from the batch in question at a rate of one in 20,000, compared with the normal rate of one in 100,000.
Since most of the vaccine in question has already been used, the decision to withhold what's left is not expected to have an impact on overall supplies.