inclusion criteria: adult male or female age equal or more than 20 years with thai id cards received two doses (21-28 days apart) of sinovac inactivated covid-19 vaccine who will be divided according to their intervals 60-less than 90 days, 90-less than120 days and 120-180 days has provided written informed consent prior to performance of any study-specific procedure no history of fever or pui symptoms within 7 days

inclusion criteria: adult male or female age equal or more than 20 years with thai id cards received two doses (21-28 days apart) of sinovac inactivated covid-19 vaccine who will be divided according to their intervals 60-less than 90 days, 90-less than120 days and 120-180 days has provided written informed consent prior to performance of any study-specific procedure no history of fever or pui symptoms within 7 days

inclusion criteria: 1. adult male or female age equal or more than 20 years with thai id cards 2. received two doses (21-28 days apart) of sinovac inactivated covid-19 vaccine who will be divided according to their intervals 60-less than 90 days, 90-less than120 days and 120-180 days 3. has provided written informed consent prior to performance of any study-specific procedure 4. no history of fever or pui symptoms within 7 days

inclusion criteria: 1. adult male or female age equal or more than 20 years with thai id cards 2. received two doses (21-28 days apart) of sinovac inactivated covid-19 vaccine who will be divided according to their intervals 60-less than 90 days, 90-less than120 days and 120-180 days 3. has provided written informed consent prior to performance of any study-specific procedure 4. no history of fever or pui symptoms within 7 days