Diseases which are transmitted through sexual intercourse are collectively called:

$STDs$ are also called

Sexually transmitted diseases $(STDs)$ cannot be transmitted easily during the use of which of the following?

Which of the following sexually transmitted diseases is caused by a protozoan?

$STDs$ (Sexually Transmitted Diseases) can lead to several long-term complications. Which of the following are considered later complications of $STDs$?
$I$. Pelvic inflammatory disease
$II$. Abortion
$III$. Stillbirth
$IV$. Ectopic pregnancies
$V$. Infertility
$VI$. Cancer
Choose the correct combination:

Which of the following principles are used to prevent $STD$ infection?
$(i)$ Avoid sex with unknown partners
$(ii)$ Use condoms during coitus
$(iii)$ Blood transfusion
$(iv)$ All of these