What diagnostic method is used for detecting EHV?

The detection of Equine Herpesvirus (EHV) is predominantly accomplished through the use of PCR (Polymerase Chain Reaction) viral isolation. This method is highly sensitive and allows for the identification of viral DNA, making it an effective tool for diagnosing infections caused by EHV.

PCR has the advantage of being able to detect very small amounts of viral genetic material, which is crucial in the context of respiratory or neurological infections where the viral load may be low. By amplifying specific DNA sequences associated with EHV, PCR provides rapid and accurate results, which is particularly important for managing outbreaks and implementing control measures in equine populations.

Other options listed may involve different diagnostic approaches but do not specifically target the detection of EHV effectively. For instance, bacterial culture is not applicable as EHV is a virus, making this method irrelevant for the diagnosis of viral infections. Physical examination, while useful for assessing the animal's health status, does not provide definitive evidence of EHV infection. Therefore, PCR viral isolation stands out as the most appropriate and effective diagnostic method for this virus.