Members of the community are invited to avail themselves of free testing for HIV and sexually transmitted infections (STI) between 3 and 7 p.m. on March 20 at the Gibbs-Morrison Cultural Center, 1823 Church St. In addition to the confidential screenings for syphilis, gonorrhea, and chlamydia, HIV-prevention counseling will be offered. The services are part of the outreach of Howard Brown Health. Additional information, including more testing sites, is available at howardbrown.org.