Abstract:
:A dairy herd (77 cows) from Rio de Janeiro, Brazil, with a history of tuberculosis infection was tested by a comparative cervical test (CCT). Seventeen cows were reactive and seven were inconclusive (swelling ≥ 2.0 mm and ≤ 3.9 mm, respectively). All of these 24 cows were slaughtered and necropsied ; samples from lungs and lymph nodes were collected for multiplex polymerase chain reaction (PCR) and culturing. Infection was confirmed in 23/24 (95.8%) of the slaughtered animals (five by culturing, four by PCR, and 14 by both tests). All cows with inconclusive results at CCT were confirmed as infected. Although slaughter of inconclusive reactor cows is not mandatory in many countries, our study provided evidence to support the slaughter of these cows, at least during an outbreak.
journal_name
Epidemiol Infectjournal_title
Epidemiology and infectionauthors
Zarden CF,Marassi CD,Carvalho AC,Figueiredo EE,Lilenbaum Wdoi
10.1017/S0950268812002105subject
Has Abstractpub_date
2013-07-01 00:00:00pages
1390-3issue
7eissn
0950-2688issn
1469-4409pii
S0950268812002105journal_volume
141pub_type
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