Two STDs caused by bacteria are:

1. Gonorrhoea: it is caused by Neisseria gonorrhoeae.

Symptoms:

a. Discharge of pus from penis and vagina

b. Burning sensation on urinating

2. Sypilis: It is caused by bacteria Treponema pallidum.

Symptoms of syphilis:

a. Appearance of sore on body parts

b. Fever, ulcer, bone pain, liver disease and anaemia.