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Many countries have reported severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) infections in mink, and transmission back to humans has raised the concern of novel variants emerging in these animals. The monitoring system on Polish mink farms detected SARS-CoV-2 infection first in January 2021 and has been kept in place since then.

Rabies as a zoonosis threatens public health worldwide. Several thousand people die each year of infections by the rabies virus (RABV). Oral rabies vaccination (ORV) of wildlife was successfully implemented in many European countries and led to rabies being brought under control there. In Poland, ORV was introduced in 1993 using vaccines containing an attenuated strain of the rabies virus. However, attenuated rabies viruses may have residual pathogenicity and cause the disease in target and non-target animals.

Since April 2020, when the first SARS-CoV-2 infection was reported in mink and subsequently in mink farm workers in the Netherlands, it has been confirmed that human-to-mink and mink-to-human transmission can occur. Later, SARS-CoV-2 infections in mink were reported in many European and North American countries.

Introduction: The reverse transcription polymerase chain reaction (RT-PCR) is one of the most extensively used methods for identification of animals infected with bluetongue virus (BTV). There are several RT-PCR protocols published and several real-time RT-PCR (rtRT-PCR) commercial kits available on the market. Because Poland faced BTV-14 infection in 2012, different protocols were implemented in the country to confirm the RT-PCR results positive for this virus. The article presents a comparative study of several RT-PCR protocols and discusses their diagnostic reliability and applicability.