Question

5. Describe the appearance of P. jiroveci in a tracheobronchial aspirate when the Giemsa stain is used to stain the material which is dried and fixed with methanol. 6. Which human herpes virus is responsible for (associated with) the following diseases: a. Infectious mononucleosis b. Cold sores c. Genital herpes d. Chicken pox e. Burkitt's lymphoma f. Shingles g. Sixth disease (roseola infantum or exanthem subitum) h. Nasopharyngeal carcinoma i. Cytomegalic inclusion disease (congenital disease)

Answer 1

5.ppearance of P. jirovecy in a tracheobranchial aspirate in human as well as in the bacterial cells is purple and pink coloured cell bodies respectively, when the Giemsa stain is used to stain material which is dried and fixed with methanol.

6.

Infectious mononucleosis: Epstein-Barr virus (EBV)

Cold sores: Herpes simplex type 1

Genital herpes: HSV-1 and HSV-2

Chicken pox: varicella-zoster virus

Burkitt’s lymphoma: Human Herpesvirus 6

Shingles: varicella-zoster virus

Sixth disease (roseola infantum or exanthema, subitum): human herpesvirus (HHV) type 6 and type 7.

Nasopharyngeal carcinoma: Epstein-Barr virus

Cytomegalic inclusion disease (congenital disease): Cytomegalovirus (CMV)