The answers is bites from infected insects
C. moderate exercise reduces swelling in joints........
The answer is B. Trichomoniasis
It's caused by a protozoan called trichomonas vaginalis, the most common pathogenic protozoan in industrialized countries.
there are about 160 million pople infected by this worlwide and it transmited sexually. For women the common symptomps ar vaginitis and urehtritis for men.
