You'd be better off contacting a government office.  Go to a
university library in your country or a large city public library and
ask a research librarian to help you find the organizations that would
have the  information.  Connect with, for example the World Health
Organization via the United Nations website,   And international
organizations of physicians who treat sexually transmitted diseases.
In the US one place would be the Center for Disease Control.

Always try a library or typing in keywords in an Internet search as a
begriming and as a way to check competing data.  A research librarian
would where data is available on pharmaceutical organizations and
business plans.

And make sure to search an understandable languages.  English-speaking
countries aren't the only one with information on diseases.

good luck with your search.

LK