Comment on

• Heterologous infection and vaccination shapes immunity against SARS-CoV-2 variants.

  Reynolds CJ, Gibbons JM, Pade C, Lin KM, Sandoval DM, Pieper F, Butler DK, Liu S, Otter AD, Joy G, Menacho K, Fontana M, Smit A, Kele B, Cutino-Moguel T, Maini MK, Noursadeghi M; COVIDsortium Immune Correlates Network‡; Brooks T, Semper A, Manisty C, Treibel TA, Moon JC; COVIDsortium Investigators‡; McKnight Á, Altmann DM, Boyton RJ. Reynolds CJ, et al. Science. 2022 Jan 14;375(6577):183-192. doi: 10.1126/science.abm0811. Epub 2021 Dec 2. Science. 2022. PMID: 34855510 Free PMC article.
• Protection against the Omicron Variant from Previous SARS-CoV-2 Infection.

  Altarawneh HN, Chemaitelly H, Hasan MR, Ayoub HH, Qassim S, AlMukdad S, Coyle P, Yassine HM, Al-Khatib HA, Benslimane FM, Al-Kanaani Z, Al-Kuwari E, Jeremijenko A, Kaleeckal AH, Latif AN, Shaik RM, Abdul-Rahim HF, Nasrallah GK, Al-Kuwari MG, Butt AA, Al-Romaihi HE, Al-Thani MH, Al-Khal A, Bertollini R, Tang P, Abu-Raddad LJ. Altarawneh HN, et al. N Engl J Med. 2022 Mar 31;386(13):1288-1290. doi: 10.1056/NEJMc2200133. Epub 2022 Feb 9. N Engl J Med. 2022. PMID: 35139269 Free PMC article. No abstract available.