Ottawa Co.: Free walk-in vaccines, COVID-19 tests today By Peg McNichol HOLLAND (WTHC-AM/FM) — Ottawa County health officials are offering these two free COVID-19 opportunities: Free walk-in vaccines for people 16 years and older: 1:30 to 4 p.m. today, Tuesday, April 20, 2021: OCDPH Clinic at GVSU Holland Campus, 515 S. Waverly Road in Holland. This is for the first dose of the Pfizer vaccine for anyone aged 16 years or older. You must be able to return for your second dose on May 19, with that appointment time set when you get your first shot today. You can schedule today’s time online at https://ocdph.as.me/OCDPHGVSUPC4201stand2ndDose?utm_medium=email&utm_source=govdelivery.