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. 2018 May 16;7:87. doi: 10.1038/s41426-018-0086-1

Fig. 2. Influenza A virus molecular prevalence by farm collected monthly from six Chinese swine farms (three in Shandong and three in Jiangsu Province) between 23 March 2015 and 25 February 2016.

Fig. 2

. ES environmental swab, PS pig oral secretion, EW environmental water, BS bioaerosol, FS fecal slurry