Social & Preventive Medicine General fe355b73 Incubation period of chancroid is: A < 7 days B 10-14 days C 2-3 weeks D 3-4 weeks High-Yield Explanation Chancroid: caused by Hemophilus ducreyi Incubation period is 4 to 7 days Azithromycin is drug of choice Ref: Park 21st edition, page 305.