Which serious bacterial sti passes through three distinct stages, during the first of which the disease can be treated and cured with antibiotics

Syphilis.

Explanation:

Definition of Syphilis is:

A serious bacterial sexually transmitted infection that progresses through three distinct stages.

-3 stages

-treated/cured with antibiotics

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.