Bijna niemand in Duitsland wil Astrazeneca.

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Op maandag 22 februari 2021 13:32 schreef speknek het volgende:
Niet weten hoe vaccins werken .

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Vaccination is the only known method to prevent the development of tumors when chickens are infected with the virus. However, administration of vaccines does not prevent transmission of the virus, i.e., the vaccine is not sterilizing.[3] However, it does reduce the amount of virus shed in the dander, hence reduces horizontal spread of the disease. Marek's disease does not spread vertically. Before the development of the vaccine for Marek's disease, Marek's disease caused substantial revenue loss in the poultry industries of the United States and the United Kingdom. The vaccine can be administered to one-day-old chicks through subcutaneous inoculation or by in ovo vaccination when the eggs are transferred from the incubator to the hatcher. In ovo vaccination is the preferred method, as it does not require handling of the chicks and can be done rapidly by automated methods. Immunity develops within two weeks.[4]

However, because vaccination does not prevent infection with the virus, Marek's is still transmissible from vaccinated flocks to other birds, including the wild bird population. The first Marek's disease vaccine was introduced in 1970. The disease would cause mild paralysis, with the only identifiable lesions being in neural tissue. Mortality of chickens infected with Marek's disease was quite low. Decades after the first vaccine was introduced, current strains of Marek Virus cause lymphoma formation on throughout the chicken's body and mortality rates have reached 100% in unvaccinated chickens.

https://en.wikipedia.org/wiki/Marek's_disease

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Op woensdag 24 februari 2021 00:35 schreef van_Lamehuizen het volgende:

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Vertel ons eens meneertje wetenschap, hoe werken vaccins?
[..]

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Op woensdag 24 februari 2021 00:35 schreef van_Lamehuizen het volgende:

[..]

Vertel ons eens meneertje wetenschap, hoe werken vaccins?
[..]