Scope of sexually transmitted infections (STIs) STIs have a profound impact on sexual and reproductive health worldwide. More than 1 million STIs are acquired every day In 2016, WHO estimated 376 million new infections with 1 of 4 STIs: chlamydia (127 million), gonorrhoea (87 million), syphilis (6.3 million) and trichomoniasis (156 million) More than 500...