Japan's BA.5 wave with more than twice the level of spread of BA.1, with sharp rise in fatalities. Earliest signs of slowing of ascent.
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医療従事者に対するファイザーワクチン4回目接種
Association of Receiving a Fourth Dose of the BNT162b Vaccine With SARS-CoV-2 Infection Among Health Care Workers in Israel https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2794864?fbclid=IwAR2yZzo9TxH2PKVZfoDz2Bs0gknq9yWnN6R_O1nowauxK7FKUCZyKaktnc0…