Protection of natural infection against reinfection with SARS-CoV-2 JN.1 variant.
Hiam ChemaitellyPeter CoyleMohamed Ali Ben KacemHoussein H AyoubPatrick TangMohammad R HasanHadi M YassineAsmaa A Al ThaniZaina Al-KanaaniEinas Al-KuwariAndrew JeremijenkoAnvar H KaleeckalAli N LatifRiyazuddin M ShaikHanan F Abdul-RahimGheyath K NasrallahMohamed Ghaith Al-KuwariAdeel Ajwad ButtHamad E Al-RomaihiMohamed H Al-ThaniAbdullatif Al-KhalRoberto BertolliniLaith Jamal Abu-RaddadPublished in: Journal of travel medicine (2024)
Overall effectiveness of infection in preventing reinfection with SARS-CoV-2 JN.1 variant was estimated at 1.8% (95% CI: -9.3-12.6%), and demonstrated rapid decline over time since the previous infection, decreasing from 82.4% (95% CI: 40.9 to 94.7%) within 3 to less than 6 months, to a negligible level after one year.