• Reminder of vaccination (3rd dose)

    To ensure the effectiveness of vaccination against hepatitis A and B (Twinrix), three (3) doses are required :


    2e :

    1 month after the first dose

    3e :

    6 months after the first dose

    This tool lets you send a friendly reminder for your third dose of vaccine.

    Please enter the date of the second dose as well as your email address. You will be notified within five (5) months.

    Date of the second vaccine:



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    Is chancroid frequent?

    From a global point of view, chancroid is more often the offending agent responsible for the occurrence of genital ulcers. Once again, from a global perspective, chancroid is more frequent than syphilis (please refer to the section on syphilis). While the incidence is greater in tropical and sub-tropical countries, such as Africa (where Haemophilus ducreyi is responsible for up to 70 % of genital ulcers), there are infrequent outbreaks in Canada and the United States (some specialty STI clinics report up to 10-20 % of genital ulcers secondary to this pathogen).