6. Pertussis.

***) All of the following are the characteristics of pertussis, except:

1. World-wide in distribution

2. May occur in both sexes

3. May occur at any age

4. Newborn immune for about three months

5. Lesions located principally in bronchiand bronchioles

Answer: D* Newborn immune for about three months

???) Concerning whooping cough all of the following are true, except:

The incubation period is 7-10 days

The diagnosis is achieved if proved bacteriologically

There is typically marked lymphocytosis

The paroxismal stage lasts four to six weeks

Specific treatment in infancy includes erythromycin

Answer: 2* The diagnosis is achieved if proved bacteriologically

7. Varicella (Chickenpox).

***) All of the following are the characteristics of varicella (chickenpox), except:

1. One attack confirms lifelong immunity

2. Distribution of lesion predominantly centripetal

3. The peripheral blood picture is essentially unchanged

4. Incubation period ranges from 10 to 20 days

5. Varicella is generally much more severe in children than in adults

Answer: E* Varicella is generally much more severe in children than in adults

***) The rash in chickenpox shows the following characteristic features, except:

1. Centripetal in distribution

2. All stages and sizes at the same time could be seen

3. Superficial

4. The causative agent is herpes virus

5. Scalp and mucous membranes are preserved (not involved)

Answer: E* Scalp and mucous membranes are preserved (not involved)

***) Regarding chickenpox (varicella) all are true, except:

1. Incubation period is 14-21 days

2. Most common complication is subacute sclerosing panencephalitis

3. Polymorphic rash

4. The epidemics have been initiated by exposure to herpes zoster

5. Children receiving steroids are at great risk for severe chickenpox

Answer: B* Most common complication is subacute sclerosing panencephalitis

***) Chickenpox is characterized by:

1. Long prodromal period around 4 weeks

2. Severe systemic symptoms in children

3. High contagion index

4. Maculo-papular rash

5. Frequent occurrence of associated pneumonia

Answer:dddddd C* High contagion index

***) Regarding varicella (chickenpox), all are true except:

1. It is vesicular rash

2. Incubation period less than one week

3. Different stages of maturation of skin lesions

4. Its more benign in children than in adults

5. Can lead to congenital varicella syndrome

Answer: B* Incubation period less than one week

8. Roseola.

***) Which one of the following statements concerning Roseola is true:

1. Etiology is believed to be due to Coxsackie virus

2. Fever is usually high at the onset

3. Rash begins with a slapped cheek appearance

4. The illness is not contagious

5. The rash leaves temporary hypopigmented areas after fading

Answer: B* Fever is usually high at the onset

9. Measles.

***) Regarding the incubation period all of the following are true, except:

1. Mumps 12-25 days

2. Measles 14-21 days

3. Rubella 14-21 days

4. Hepatitis A 3-8 weeks

5. Hepatitis B 6-24 weeks

Answer: D* Measles 14-21 days

***) Which one of the following infections typically has incubation period of less than 2 weeks:

1. Mumps

2. Varicella

3. Rubella

4. Measles

5. Rabies

Answer: D* Measles

***) All of the following are features of measles, except:

1. Prodromal signs such as fever and anorexia last 3 to 4 days

2. The sub-occipital lymph nodes are enlarged

3. Koplik’s spots are visible 2 to 3 days before the onset of rash

4. The rash starts behind the ears and spreads to the forehead, face and down the body

5. The incubation period is one to two weeks

Answer: B* The sub-occipital lymph nodes are enlarged

***) Regarding measles in Jordan all are false, except:

1. The peak of incidence is among infants

2. Vaccine coverage is complete

3. Incidence among children is shifting to older age group

4. The vaccine is made of killed bacteria

5. The cold chain is weak

Answer: dddddddddC* Incidence among children is shifting to older age group

***) In measles the rash and accompanying illness reach a climax on about the:

1. 2^nd day

2. 3^rd day

3. 6^th day

4. 9^th day

5. 12^th day

Answer: C* 6^th day

***) Koplik’s spots are pathognomonic of one of the following:

1. Rubella

2. Measles

3. Chicken pox

4. Scarlet fever

5. Mumps

Answer: B* Measles

???) Comparing measles (Rubeola) with German measles (Rubella) all of the following are true, except:

The incubation period is shorter

The temperature is higher

Pre-rash symptoms are of longer duration

Koplik's spots are pathognomonic

Sub-occipital lymph nodes are more prominent

Answer: 5* Sub-occipital lymph nodes are more prominent

10. Mumps.

***) Regarding Mumps, all are true except:

1. Incubation period is 12-25 days

2. Parotitis

3. Conjunctivitis

4. Orchitis

5. Encephalitis

Answer: C* Conjunctivitis

***) The percent of persons who develop inapparent infection by Mixovirus parotitis (mumps) is:

1. 5%

2. 15%

3. 20%

4. 35%

5. 55%

Answer: D*35%

???) An 3,5 year old boy is brought with the history of fever and swelling in the left side of the neck of 2 days duration. All are true about the management of this boy, except:

The extension of swelling behind the ear lobe helps pointing to mumps rather than cervical adenitis

In mumps the serum amylase is elevated while it is normal in cervical adenitis

The treatment of cervical adenitis is by penicillin G

The best way to differentiate mumps from cervical adenitis is by needle aspiration of the swelling for culture purposes

If this proves to be mumps immunity will be lifelong

Answer: 4* The best way to differentiate mumps from cervical adenitis is by needle aspiration of the swelling for culture purposes