The city of Evanston will host its second public H1N1 vaccination clinic on Nov. 21. The clinic will be held at Evanston Township High School, 1600 Dodge Ave., starting at 9 a.m. and will end depending on the availability of the vaccine, said Eric Palmer, Evanston’s community information coordinator.

Due to the limited supply of vaccines, only community members who belong to one of the five priority groups identified by the Centers for Disease Control and Prevention can receive the treatment.

“We’re putting a heavy emphasis on pregnant women and preschool-age children,” Palmer said. “They’re the most susceptible people within the priority groups.”

Individuals must also show proof of residency in Evanston in order to participate in the clinic. Saturday’s clinic will distribute the remainder of the first shipment of swine flu vaccinations the city received in late October. Throughout the month of November, the Evanston Department of Health and Human Services hosted school-based vaccination clinics for students and faculty members in Evanston schools, including Northwestern.

The city has only received one-fifth of the vaccinations it requested and is awaiting additional shipments from the Illinois Department of Public Health.

However, Palmer said the city “honestly has no idea” when and if it will receive a second shipment.