Fig. 2
From: Avian influenza H9N2 virus isolated from air samples in LPMs in Jiangxi, China
Map of air sample collection sites. a Retail LPMs: several poultry stalls in each retail LPM were selected as study centers. Sampling sites around the poultry stall are shown by black dots. Control samples were collected outside of each market. b Wholesale LPM: for Jingdong Bird and Flower wholesale market, five air samples were collected in the east, south, west, north, and center of the LPM, and a series of samples were collected near the outside entrance at distances of 1 m, 3 m, 5 m, and 7 m. Sampling sites are shown by black dots. Control sample was collected outside of the market