Насколько эффективны вакцины от ковида и гриппа?

...a 2018 review of 52 randomized trials for influenza vaccines that studied over 80,000 healthy adults reported an overall influenza vaccine EER of 0.9% and a 2.3% CER, which calculates to a RRR of 60.8% [32]. This vaccine efficacy is consistent with a 40% to 60% reduction in influenza reported by the Centers for Disease Control and Prevention (CDC) [33]. However, critically appraising data from the 2018 review shows an overall ARR of only 1.4%, which reveals vital clinical information that is missing in the CDC report. A 1.4% ARR works out to a NNV of approximately 72 people, meaning that 72 individuals need to be vaccinated to reduce one case of influenza. By comparison, Figure 2 of the present article shows that the NNV for the Pfzier-BioNTech and Moderna vaccines are 142 (95% CI 122 to 170) and 88 (95% CI 76 to 104), respectively.
ps надо понимать граничные условия в которых проходили тесты ака временные рамки, и уровень заболеваемости в то время. если считать что клинические испытания проходили 2 месяца, а вакцина действует хотя бы пол года, то соответственно каждый как минимум 30й получит пользу от вакцины Модерна, примерно 50й от Файзера и 72 от гриппа. Те прогресс в вакцинологии налицо.
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