We monitored SARS-CoV-2 variants in Haiti from 2020-2023. Despite Haitian COVID-19 travel restrictions and in the setting of a vaccination rate of 2.7%, the timing and lineage evolution of the Haiti epidemic mirrored what was occurring in the rest of the world. Sources for importation of lineages into Haiti were the United States (US), the Dominican Republic (DR), Europe, and Brazil, with exportation of lineages to the US, DR, Europe, and Asia. Viral load in patients infected by the Delta and Omicron BA.1 were correlated along the phylogenies, suggesting that higher viral loads have facilitated strain transmission and evolution.

中文翻译：

---

最低免疫率岛屿人口的 COVID-19 谱系：海地 SARS-CoV-2 的基因组流行病学


我们监测了 2020 年至 2023 年海地的 SARS-CoV-2 变体。尽管海地 COVID-19 旅行受到限制，并且疫苗接种率为 2.7%，但海地疫情的时间和谱系演变反映了世界其他地区发生的情况。海地的血统进口来源是美国 （US）、多米尼加共和国 （DR）、欧洲和巴西，血统出口到美国、DR、欧洲和亚洲。受 Delta 和 Omicron BA.1 感染的患者的病毒载量沿系统发育相关，表明较高的病毒载量促进了菌株的传播和进化。