4.3 practice exam

Please match the following with a miscellaneous bacterial organism:

a. Walking pneumonia:

Mycoplasma pneumoniae

Please match the following with a miscellaneous bacterial organism:

b. Lymphogranuloma venereum:

Chlamydia trachomatis

Please match the following with a miscellaneous bacterial organism:

c. Tick bite:

Rickettsiae rickettsia, RMSF

A new flu virus strain is labelled “H3N2”. Please answer the following questions:

a. How is “flu” typically transmitted?

Aerosol & Droplet

A new flu virus strain is labelled “H3N2”. Please answer the following questions:

b. What is “Drift”?

Drift: small mutations, making host susceptible/Requires new vaccine each year/HA and NA accumulate mutations/immune response no longer protects fully/sporadic outbreaks, limited epidemics

A new flu virus strain is labelled “H3N2”. Please answer the following questions:

c. What is “Shift”?

Shift: major mixing of RNAs, whole new virus./“new” HA or NA proteins/pre-existing antibodies do not protect/may get pandemics

Please answer the following questions regarding Measles:

a. What type of virus causes measles?

Morbillivirus

Please answer the following questions regarding Measles:

b. What is the reservoir for measles?

Humans

Please answer the following questions regarding Measles:

c. What is SSPE?

Subacute sclerosing panencephalitis occurs when infection of the brain becomes clinically apparent years later, often after an otherwise mild and uncomplicated case. Insidious onset (may be as long as 6-8 years after the measles), early dementia, disturbed motor function, myoclonic jerks, seizures, focal retinitis with optic atrophy, cerebellar ataxia leading to stuporous rigid state progresses to death in 1 to 3 years

Please answer the following questions regarding the Herpes viruses:

a. How many Herpes viruses routinely infect only humans?

Nine: Herpes simplex (1-2), Varicella zoster (3), Epstein Barr (4), Cytomegalovirus (5), Roseoloviruses (6A, 6B, 7), Kaposi's sarcoma-associated herpesvirus (8).

Please answer the following questions regarding the Herpes viruses:

b. Which type usually causes genital herpes?

HSV/HHV 2

Please answer the following questions regarding the Herpes viruses:

c. For which Herpes virus is there a vaccine?

Varicella/Zoster

Please answer the flowing questions regarding viruses:

a. Which HPV serotypes are known to cause common warts?

1,2-plantar and common warts

Please answer the flowing questions regarding viruses:

b. Which HPV serotypes are known to cause laryngeal warts?

6,11-condylomata and laryngeal warts

Please answer the flowing questions regarding viruses:

c. For which Hepatitis virus is there currently a cure?

Hepatitis C