Does live oral cholera vaccine (Vaxchora, Emergent Travel Health) need to be administered at an interval from other live oral or injectable vaccines?

In general, no. According to ACIP’s “General Best Practice Guidelines for Immunization”, concerns about spacing between doses of live vaccines not given at the same visit applies only to live injectable or intranasal vaccines. So live oral cholera vaccine may be administered simultaneously or at any interval before or after administration of most other vaccines. One exception is Ty21a oral typhoid vaccine (Vivotif, Emergent Travel Health) and oral cholera vaccine. Oral cholera vaccine should be administered before Ty21a vaccine, and at least 8 hours should separate the cholera vaccine and the first dose of Ty21a.