What signs might suggest the presence of a foreign animal disease (FAD)?

The presence of high morbidity and mortality rates, along with the formation of vesicles, is a strong indicator of foreign animal diseases (FADs). Many FADs are characterized by rapid spread and severe clinical symptoms, which can lead to significant losses in livestock populations. Vesicular lesions are particularly indicative of certain viral diseases, such as foot-and-mouth disease or vesicular stomatitis, both of which can cause widespread illness and death in affected animals. The identification of these signs is crucial for early detection and response, thereby helping to contain potential outbreaks and protect animal populations, as well as public health and trade.

Other signs such as unusual ticks, changes in coloration, decreased feed intake, lethargy, sneezing, and nasal discharge may indicate various health issues or conditions but are not as specific or indicative of foreign animal diseases as the signs mentioned. The presence of vesicular lesions alongside high morbidity/mortality is distinctly associated with certain FADs that require immediate attention and control measures.