@techreport{weko_238566_1,
   author	 = "Hideki,Kakeya",
   title	 = "Anomalous US-wide prevalence of reversion mutants in the emergence of Omicron BA.1",
   year 	 = "2024",
   institution	 = "University of Tsukuba",
   number	 = "2",
   month	 = "aug"
}