Some vaccines require an interval of 48 hours before nucleic acid testing, while others do not. Clinically, it is especially important to wait before performing nucleic acid testing for neocoronaviruses in this group of people who have received inactivated vaccines, which contain nucleic acid sequences of the pathogen. After vaccination, the contents of the vaccine may contaminate the vaccinated person, e.g., through aerosol venting, which may result in false positives if the nucleic acid test is performed at this time. Generally, if you receive adenovirus vector vaccine or recombinant protein vaccine or the like, you can usually do nucleic acid testing after vaccination, and there is no need for an interval. Whether or not nucleic acid can be done after vaccination should be decided by a professional, depending on the circumstances.