Prevalence of MRSA A total of 641 and 100 nasal swabs were collected from live pigs and related animal workers, respectively. Totally, 89 (14.4%) MRSA isolates were identified from 641 pigs, which included 536 pigs in pig farms (157 piglets, 158 sows, and 221 grower pigs) and 105 grower pigs in auction markets. No MSSA was identified from
pigs. For pigs in auction market, only two (1.9%) MRSA isolates were identified from one of the two markets sampled.