Harlingen to host drive-thru COVID-19 vaccine clinic Friday 2 days 15 hours 16 minutes ago Tuesday, May 18 2021 May 18, 2021 May 18, 2021 3:11 PM May 18, 2021 in News - Local By: KRGV Digital Credit: MGN Online The city of Harlingen will host a drive-thru second dose COVID-19 vaccine clinic from 6 a.m. through 12 p.m. on Friday, May 21, at the Harlingen Convention Center located at 701 Harlingen Heights Dr. According to a news release, the clinic is for individuals who received their first dose of the Pfizer vaccine on April 23 and anyone 12 years and older who needs a first dose. People under 18 who wish to receive a vaccine must be accompanied by an adult.