COVID-19 vaccination and BA.1 breakthrough infection induce neutralising antibodies which are less efficient against BA.4 and BA.5 Omicron variants, Israel, March to June 2022 Kliker, Limor and Zuckerman, Neta and Atari, Nofar and Barda, Noam and Gilboa, Mayan and Nemet, Ital and Abd Elkader, Bayan and Fratty, Ilana S and Jaber, Hanaa and Mendelson, Ella and Alroy-Preis, Sharon and Kreiss, Yitshak and Regev-Yochay, Gili and Mandelboim, Michal, Eurosurveillance, 27, 2200559 (2022), https://doi.org/10.2807/1560-7917.ES.2022.27.30.2200559