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Tétano em bovinos
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O tétano é uma doença infeciosa causada pelas toxinas da bactéria Clostridium tetani. Esta bactéria
não invasiva aproveita uma ferida ou o local da incisão para penetrar e infetar o animal. A bactéria e os
seus esporos estão presentes nos cinco continentes, mas com prevalência que varia de acordo com
as características e o pH do solo, as condições climáticas e a estação do ano. A prevalência em áreas
rurais também é maior do que em áreas urbanas. Esta doença foi descrita pela primeira vez na
Antiguidade, e foi durante muito tempo altamente mortal para os seres humanos, especialmente
durante os maiores conflitos da história. Atualmente a sua incidência diminuiu significativamente,
devido à profilaxia e as campanhas de vacinação. A suscetibilidade ao tétano varia muito entre as
espécies, sendo os equinos e ovinos muito mais sensíveis que os bovinos. Contudo, os bovinos
também podem desenvolver tétano. Como a incidência em bovinos é menor, a profilaxia é não e
sistemática. No entanto, um bovino infetado está na maioria dos casos condenado à morte, pois o
tratamento é difícil e dispendioso, ainda que numa exploração de tamanho médio, a perda de um bovino
geralmente representa um prejuízo financeiro maior do que o custo da profilaxia vacinal para todo o
rebanho.
Tetanus is an infectious disease caused by the toxins of the bacterium Clostridium tetani. This noninvasive bacterium takes advantage of a wound or incision site to penetrate and infect the animal. The bacterium and its spores are present on all five continents, but their prevalence varies according to the characteristics and pH of the soil, climatic conditions and the season. Prevalence in rural areas is also higher than in urban areas. This disease was first described in ancient times, and was for a long time highly deadly to humans, especially during the greatest conflicts in history. Today, its incidence has decreased significantly due to prophylaxis and vaccination campaigns. Susceptibility to tetanus varies greatly between species, with horses and sheep being much more susceptible than cattle. However, cattle can also develop tetanus. As the incidence in cattle is lower, prophylaxis is not systematic. However, an infected bovine is in most cases condemned to death, as treatment is difficult and expensive, although on a medium-sized farm, the loss of one bovine usually represents a greater financial loss than the cost of vaccine prophylaxis for the entire herd.
Tetanus is an infectious disease caused by the toxins of the bacterium Clostridium tetani. This noninvasive bacterium takes advantage of a wound or incision site to penetrate and infect the animal. The bacterium and its spores are present on all five continents, but their prevalence varies according to the characteristics and pH of the soil, climatic conditions and the season. Prevalence in rural areas is also higher than in urban areas. This disease was first described in ancient times, and was for a long time highly deadly to humans, especially during the greatest conflicts in history. Today, its incidence has decreased significantly due to prophylaxis and vaccination campaigns. Susceptibility to tetanus varies greatly between species, with horses and sheep being much more susceptible than cattle. However, cattle can also develop tetanus. As the incidence in cattle is lower, prophylaxis is not systematic. However, an infected bovine is in most cases condemned to death, as treatment is difficult and expensive, although on a medium-sized farm, the loss of one bovine usually represents a greater financial loss than the cost of vaccine prophylaxis for the entire herd.
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Keywords
Clostridium Tétani Bovino Intoxicação Tétano Toxinas tetânicas Vacina Clostridium Tétani Cattle Intoxication Tetanic toxins Tetanus Vaccine