What is the method used to test for African Swine Fever (ASF)?

The method used to test for African Swine Fever (ASF) is primarily RT PCR on blood samples. This technique is critical for detecting the presence of the ASF virus due to its high sensitivity and specificity. Real-time polymerase chain reaction (RT PCR) allows for the amplification of viral DNA, making it possible to identify the virus even in low concentrations within the blood samples from affected animals. This method is particularly beneficial for early detection and can help control outbreaks by providing timely results.

While serology testing can be used to detect antibodies against the ASF virus, it does not confirm active infection and may not be effective in the early stages of illness, which is why it is not the primary method for diagnosing ASF. Histological examination might provide information about tissue changes associated with ASF but is not a specific test for the virus itself. Ultrasound imaging has limited application in diagnosing ASF directly, as it is more suited for assessing physical changes rather than detecting viral presence.