Figure 2

Air sampling and environmental swabbing of clade 2.3.4.4b HPH5N1 outbreak sites. A Viral concentrations detected in air samples (B) and environmental swabbing of wet grass and a water puddle at two HPH5N1 outbreak sites (Outbreaks I and II). Viral concentrations were expressed as log10 (RNA copies/mL) values for both outbreaks. Environmental swabs were only collected during outbreak II in front of the air exhaust system.