Section 2

Question 0

Incubation

Answer 0

extends from exposure to onset signs and symptoms; individual may not know he has been exposed or will develop the illness; often this is the time transmission to others is greatest

Question 1

Phases of acute infection

Answer 1

• exposure
• incubation
• prodrome
• clinical illness
• convalescence

Question 2

Prodrome

Answer 2

onset of symptoms – fatigue, low grade fever, nausea, weakness, and, generalized muscle aches; feeling under the weather

Question 3

Clinical illness

Answer 3

signs and symptoms specific to disease

Question 4

convalescence

Answer 4

extends from waning clinical manifestations to full recovery, fatigue is common

Question 5

Influenza

Answer 5

• viral infection of the epithelial cells of Airways
• transmitted by respiratory droplets from an infected person or contaminated surface
• three different types of viruses (A,B, and C) each has several strands or subtypes
• the virus gradually changes genetic composition during replication in the human host this is called reassortment there are new vaccines yearly because of reassortment

Question 6

Pneumonia

Answer 6

• influenza in pairs Celia, mucus, and antibodies in the respiratory tract
• loss of these protections can lead to a bacterial pneumonia
• bacteria is a common complication of an influenza

Question 7

Signs and symptoms of flu

Answer 7

• cough
• sore throat
• nasal congestion
• shortness of breath (dyspnea)
• chills
• fever
• body aches
• weakness
• Malaise