Canadian Teen Recovers From Severe H5N1 Bird Flu Infection
As for testing, the girl's first swab at BC Children's was positive for influenza A but negative for H1 or H3 disease. Further polymerase chain reaction testing for flu, COVID, and respiratory syncytial virus showed a cycle threshold (Ct) value of 27.1, suggesting a relatively high viral load, which prompted further subtyping, revealing H5 disease.