As new COVID-19 strains surface and proliferate over the world,the pandemic is still evolving[1].The FLiRT variants are one such family of variants that have recently drawn notice.They are a family of Omicron sub-vari...As new COVID-19 strains surface and proliferate over the world,the pandemic is still evolving[1].The FLiRT variants are one such family of variants that have recently drawn notice.They are a family of Omicron sub-variants quickly becoming dominant.These FLiRT variants include KP.2 and KP.1.1.Due to certain changes in the virus's spike proteins,these variants have been dubbed"FLiRT."展开更多
Multiple waves of coronavirus disease 2019(COVID-19) outbreaks have affected numerous countries worldwide. The first case of SARS-CoV-2 reinfection was reported in Hong Kong in August 2020^([1]), leading to increased ...Multiple waves of coronavirus disease 2019(COVID-19) outbreaks have affected numerous countries worldwide. The first case of SARS-CoV-2 reinfection was reported in Hong Kong in August 2020^([1]), leading to increased interest in the effectiveness of natural immunity acquired from primary infection. While data reports vary across countries, all findings indicate that prior SARS-CoV-2 infection provides substantial protection against reinfection^([2]). However, natural immunity from infection with previous non-Omicron or early Omicron sub-lineages offers lower levels of protection against Omicron reinfection, with rates below 60%^([3]) and approximately 75%[4], respectively.展开更多
Dear Editor,COVID-19 inactivated vaccines have been extensively administered inChina.However,the majority of the Chinese population has experiencedbreakthrough infections from SARS-CoV-2 ancestral,Delta or Omicronvari...Dear Editor,COVID-19 inactivated vaccines have been extensively administered inChina.However,the majority of the Chinese population has experiencedbreakthrough infections from SARS-CoV-2 ancestral,Delta or Omicronvariants over the past three years,particularly during the wave of Omicron BA.5 and BA.7 variants at the end of 2022(Zhu et al.,2023).Subsequently,new Omicron variants,such as BQ.1,BQ.1.1,XBB,XBB.1/XBB.1.9,and XBB.1.5/XBB.1.9.1,are emerging in China(Yueetal.,2023;Zhu et al.,2023).Therefore,it is an urgentneed and a publichealth imperative to assess the extent of the immunoprotection established in this population.展开更多
文摘As new COVID-19 strains surface and proliferate over the world,the pandemic is still evolving[1].The FLiRT variants are one such family of variants that have recently drawn notice.They are a family of Omicron sub-variants quickly becoming dominant.These FLiRT variants include KP.2 and KP.1.1.Due to certain changes in the virus's spike proteins,these variants have been dubbed"FLiRT."
文摘Multiple waves of coronavirus disease 2019(COVID-19) outbreaks have affected numerous countries worldwide. The first case of SARS-CoV-2 reinfection was reported in Hong Kong in August 2020^([1]), leading to increased interest in the effectiveness of natural immunity acquired from primary infection. While data reports vary across countries, all findings indicate that prior SARS-CoV-2 infection provides substantial protection against reinfection^([2]). However, natural immunity from infection with previous non-Omicron or early Omicron sub-lineages offers lower levels of protection against Omicron reinfection, with rates below 60%^([3]) and approximately 75%[4], respectively.
基金supported in part by grants from the National Natural Science Foundation of China(82151218)National Key Research and Development Program of China(2021YFC2301703,2021YFC2301303,2021YFC2300900,2022YFC2303704)+2 种基金Yunnan Key Research and Development Program(202103AC100005,202103AQ100001,202102AA310055)Yunnan Fundamental Research Project(202101AT070282)CAS“Light of West China”.Ethics Review Board of the Kunming Institute of Zoology Chinese Academy of Sciences approved this study(assurance No.:IACUC-PA-2021-11-009)。
文摘Dear Editor,COVID-19 inactivated vaccines have been extensively administered inChina.However,the majority of the Chinese population has experiencedbreakthrough infections from SARS-CoV-2 ancestral,Delta or Omicronvariants over the past three years,particularly during the wave of Omicron BA.5 and BA.7 variants at the end of 2022(Zhu et al.,2023).Subsequently,new Omicron variants,such as BQ.1,BQ.1.1,XBB,XBB.1/XBB.1.9,and XBB.1.5/XBB.1.9.1,are emerging in China(Yueetal.,2023;Zhu et al.,2023).Therefore,it is an urgentneed and a publichealth imperative to assess the extent of the immunoprotection established in this population.
