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Evolução da Epidemia de Língua Azul na Europa
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Abstract(s)
A febre catarral ovina é uma doença viral transmitida por vetores, que afeta principalmente os
ungulados não africanos. O agente patogénico é um vírus do qual estão atualmente identificados 28
serótipos distintos, com graus variados de patogenicidade. Desde a primeira grande epidemia
registada na Europa em 1998, a doença tem-se disseminado progressivamente pelo continente, com
reaparecimentos recentes que confirmam a sua persistência e evolução. O contexto atual foi marcado
por uma nova vaga epidémica, causada pelo serótipo 3, cujo reaparecimento em vários países
europeus tem gerado preocupação crescente. A doença afeta sobretudo os ovinos, onde provoca
sinais clínicos significativos, embora esteja também a afetar os bovinos, onde os problemas
reprodutivos e obstétricos estão a causar grandes perdas económicas. O diagnóstico realiza-se com
combinação da observação clínica e métodos laboratoriais. Face à ausência de tratamento curativo, o
controlo sintomático é a principal abordagem terapêutica. O controlo da doença depende de uma
estratégia integrada, que inclui a vacinação e a cooperação entre Estados-Membros, com medidas
como a notificação obrigatória dos surtos e restrições sanitárias à circulação animal. O impacto desta
nova epidemia e os desafios associados ao seu controlo serão aprofundados ao longo da dissertação.
A febre catarral ovina continua a representar uma ameaça crescente à saúde animal na Europa. A sua
gestão exige vigilância constante, estratégias de vacinação adaptadas e uma forte coordenação
internacional.
Bluetongue is a viral vector-borne disease that affects non-African ungulates. The causative agent is a virus currently classified into 28 distinct serotypes, each with varying degrees of pathogenicity. Since the first major outbreak recorded in Europe in 1998, the disease has progressively spread across the continent, with recent resurgences confirming its persistence and evolution. The current context is marked by a new epidemic wave caused by serotype 3, whose reemergence in several European countries has raised growing concern. The disease primarily affects sheep, in which it causes significant clinical signs. However, it is also impacting cattle, where reproductive and obstetric issues are leading to substantial economic losses. Diagnosis relies on a combination of clinical observation and laboratory methods. In the absence of a curative treatment, symptomatic management remains the main therapeutic approach. Control of the disease depends on an integrated strategy, which includes vaccination and cooperation between Member States through measures such as mandatory outbreak reporting and movement restrictions. The impact of this new epidemic and the challenges associated with its control will be explored in detail throughout the dissertation. Bluetongue continues to pose a growing threat to animal health in Europe, particularly due to successive outbreaks. Its management requires constant surveillance, tailored vaccination strategies, and strong international coordination.
Bluetongue is a viral vector-borne disease that affects non-African ungulates. The causative agent is a virus currently classified into 28 distinct serotypes, each with varying degrees of pathogenicity. Since the first major outbreak recorded in Europe in 1998, the disease has progressively spread across the continent, with recent resurgences confirming its persistence and evolution. The current context is marked by a new epidemic wave caused by serotype 3, whose reemergence in several European countries has raised growing concern. The disease primarily affects sheep, in which it causes significant clinical signs. However, it is also impacting cattle, where reproductive and obstetric issues are leading to substantial economic losses. Diagnosis relies on a combination of clinical observation and laboratory methods. In the absence of a curative treatment, symptomatic management remains the main therapeutic approach. Control of the disease depends on an integrated strategy, which includes vaccination and cooperation between Member States through measures such as mandatory outbreak reporting and movement restrictions. The impact of this new epidemic and the challenges associated with its control will be explored in detail throughout the dissertation. Bluetongue continues to pose a growing threat to animal health in Europe, particularly due to successive outbreaks. Its management requires constant surveillance, tailored vaccination strategies, and strong international coordination.
Description
Keywords
Febre catarral ovina Língua azul Ruminantes Vírus Doença vetorial Culicoides Vacinação Ovine catarrhal fever Bluetongue Ruminants Virus Vector-borne disease Vaccination