ABSTRACT
Several zoonotic influenza A viruses detected in humans contain genes derived from avian H9N2 subtypes. We uncovered a Eurasian avian-like H1N1 swine influenza virus with polymerase basic 1 and matrix gene segments derived from the H9N2 subtype, suggesting that H9N2 viruses are infecting pigs and reassorting with swine influenza viruses in China.
Subject(s)
Influenza A Virus, H1N1 Subtype , Influenza A Virus, H9N2 Subtype , Influenza, Human , Orthomyxoviridae Infections , Swine Diseases , Animals , Birds , China/epidemiology , Humans , Influenza A Virus, H1N1 Subtype/genetics , Influenza A Virus, H9N2 Subtype/genetics , Influenza, Human/epidemiology , Orthomyxoviridae Infections/veterinary , Phylogeny , Reassortant Viruses/genetics , Swine , Swine Diseases/epidemiologyABSTRACT
We report detection of severe acute respiratory syndrome coronavirus 2 Omicron variant (B.1.1.529) in an asymptomatic, fully vaccinated traveler in a quarantine hotel in Hong Kong, China. The Omicron variant was also detected in a fully vaccinated traveler staying in a room across the corridor from the index patient, suggesting transmission despite strict quarantine precautions.
Subject(s)
COVID-19 , SARS-CoV-2 , China/epidemiology , Hong Kong/epidemiology , Humans , QuarantineABSTRACT
We sequenced ≈50% of coronavirus disease cases imported to Hong Kong during March-July 2021 and identified 70 cases caused by Delta variants of severe acute respiratory syndrome coronavirus 2. The genomic diversity detected in Hong Kong was similar to global diversity, suggesting travel hubs can play a substantial role in surveillance.