Arlington Heights mass vaccination site accepting appointments By FOX 32 Digital Staff Published CDC expected to relax guidance on wearing masks outdoors President Joe Biden’s top coronavirus advisor hinted that on Tuesday, the CDC will relax the guidance on mask wearing outdoors. ARLINGTON HEIGHTS, Ill. - The Arlington Heights Park District will host a mass COVID-19 vaccination site this week for all residents 16 and over, and appointments are available. The park district will distribute 1,728 doses of the Pfizer vaccine on Wednesday, April 28 from 11 a.m. to 5 p.m. at the Arlington Ridge Center, 660 North Ridge Avenue. Registration is required for an appointment, and residents should only make a request if they are available on May 19 from 11 a.m. to 5 p.m., when the second dose is scheduled to be administered.