Collin County set to receive 43,000 vaccine doses next week Collin County set to receive 43,000 vaccine doses next week Collin County is getting almost as many doses of vaccine next week as it received in about the first two months of the rollout. Collin County is getting almost as many doses of vaccine next week as it received in about the first two months of the rollout. Two additional vaccination sites will also open to help administer the nearly 43,000 doses the county is expecting. Collin County receives the big batch of vaccines next week to be administered across six different sites.