נוכח העלייה בשיעורי ההדבקה בנגיף הקורונה בעולם: ייערך דיון בבקשה מסתמנת להאריך את חובת המסכות מעבר ל-1.4.22

Summary
What is already known about this topic?

The SARS-CoV-2 Delta (B.1.617.2) and Omicron (B.1.1.529) variants are highly transmissible. Outbreaks have been reported among vaccinated populations in indoor settings where mask use was limited.

What is added by this report?

Despite multiple introductions as evidenced by detection of at least three sublineages of SARS-CoV-2, this investigation did not find evidence of widespread transmission among a highly vaccinated population at a large event in an indoor setting where mask use was required and monitored.

What are the implications for public health practice?

Implementing multiple prevention measures (vaccinations and boosters, consistent mask wearing, enhanced indoor ventilation, and testing after text notification) can limit the transmission of SARS-CoV-2 at large events, including highly transmissible variants.

The case rates in the vaccinated and unvaccinated populations are unadjusted crude rates that do not take into account underlying statistical biases in the data and there are likely to be systematic
differences between these 2 population groups

Unadjusted case rates among persons not vaccinated have been formatted in grey to further emphasise the caution to be employed when interpreting this data

To make our data less susceptible to misinterpretation, the UK Health Security Agency has worked with the UK Statistics Authority to update some of the data tables and descriptions in the report, specifically around rates of infection in vaccinated and unvaccinated groups

A simple comparison of COVID-19 case rates in those who are vaccinated and unvaccinated should not be used to assess how effective a vaccine is in preventing serious health outcomes. This is because these figures are susceptible to a number of differences between the groups, other than the vaccine itself, and these biases mean that you cannot use the rates to determine how well the vaccines work.

Suppressed Evidence
Intentionally failing to use information suspected of being relevant and significant is committing the fallacy of suppressed evidence. This fallacy usually occurs when the information counts against one’s own conclusion. Perhaps the arguer is not mentioning that experts have recently objected to one of his premises.

But regardless of the reason, cherry picking should never be an option.

Cherry picking is not only dishonest and misleading to the public, but it reduces the credibility of experimental findings because it does not present all the results of an experiment.

Please note that the following table should be read in conjunction with pages 37 to 40 of this report, and the footnotes provided on page 45

The case rates in the vaccinated and unvaccinated populations are unadjusted crude rates that do not take into account underlying statistical biases in the data and there are likely to be systematic
differences between these 2 population groups

Unadjusted case rates among persons not vaccinated have been formatted in grey to further emphasise the caution to be employed when interpreting this data.