In the case of the new coronavirus, for example, nucleic acid testing is generally not recommended within 48 hours of receiving the new coronavirus vaccine. This is because most of our vaccines are inactivated vaccines, which are vaccines made after inactivation of the neocoronavirus pathogen and contain the nucleic acid sequence of the pathogen. Vaccination sites generally leave small amounts of vaccine liquid residue from opening vaccine vials, extracting vaccine fluids, and venting syringes, which may contaminate the surfaces of vaccination tables, walls, doorknobs, corridors, and clothing of vaccinators and vaccinees at the vaccination site, either as a liquid or in the form of aerosols. As a result, small amounts of pathogens may be present in the nasal or throat mucosa of the vaccinated person, and false-positive results may occur when detecting nucleic acids in nasopharyngeal secretions. Therefore, nucleic acid testing is generally not recommended within 48 hours of vaccination. In summary, it is better for patients to have nucleic acid testing done 48 hours after vaccination.