Brazil's Santa Catarina state said it has ruled out an outbreak of bird flu in a commercial chicken farm while the federal government was keeping it on a list of suspected cases pending further tests, APA reports citing Reuters.
In a statement late on Thursday, the state cited laboratory test results for its conclusion but noted additional tests are required.
Tocantins state this week ruled out highly pathogenic avian influenza and Newcastle disease, citing preliminary test results, at a commercial farm there.
Brazil is currently monitoring 12 potential outbreaks, most of them among wild birds and backyard flocks.
Santa Catarina said the farm "remains under investigation to obtain a final diagnosis regarding the cause of death" of an unspecified number birds.
The investigation will be completed in a week, Santa Catarina said.
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