Corona infection despite vaccination

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Corona vaccination does not provide 100% protection against covid disease. In Austria, about 20 fully immunized individuals contracted the disease despite vaccination. All previously received the Pfizer/BioNTech vaccine.

One in ten has full protection
Covid 19 disease with symptoms has so far occurred in 20 people in Austria despite full immunization with a Corona vaccine. Six people affected by such a “vaccine breakthrough” have subsequently died, and hospitalization has been reported in two others, according to the weekly adverse event report from the Federal Office for Safety in Health Care (BASG). SARS-CoV-2 infections without symptoms of illness are not counted.

Illnesses after full immunization
In the case of Covid-19 vaccines, one to two doses are required for full vaccine protection, depending on the manufacturer, and then a period of time must be allowed for the development of an appropriate immune response. Covid-19 disease that occurs is reported as vaccine breakthrough when a period of seven days has elapsed after the second dose or a period of 28 days or more has elapsed after the single dose.

All reported cases of illness in vaccinated individuals to date have involved the manufacturer Biontech/Pfizer. However, most vaccinations have also been carried out with this vaccine, and with AstraZeneca only comparatively few people in Austria have been fully immunized due to the longer interval until the second dose. By the end of the reporting period on April 30, 3,132,230 vaccinations had been entered in the E vaccination record. 2,168,070 doses of the Biontech/Pfizer vaccine, 287,555 of Moderna and 676,580 units of AstraZeneca had been administered by then, BASG notes.

These three vaccines are scheduled for two doses, unlike the Johnson&Johnson vaccine, which had not been vaccinated in Austria by then. According to the Ministry of Health’s vaccination dashboard, 846,193 people in Austria had received a second dose as of April 30. Seven days earlier, on April 23, the number was 782,684. This figure compares with the 20 cases reported so far in which the hoped-for protective effect failed to materialize.

Only cases with symptoms counted
The failure of a vaccination to have an effect is “particularly relevant and should be reported in any case,” the BASG emphasizes. The affected person must have tested positive for SARS-CoV-2 and also have symptoms such as fever, shortness of breath, cough, or loss of smell or taste. Therefore, an infection with no apparent illness is not classified as a vaccine breakthrough, according to BASG, because the currently licensed Covid-19 vaccines were developed to prevent illness.

— sources: APA and vienna.at/picture: pixabay.com

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