HLTB21H3 Chapter : HLTA01 Ch 3

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harlequinworm30

3 Jan 2012

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Yellow fever & malaria are vector-borne diseases. Agricultural revolution> cultivation of crops & animals> urbanization> transmission of disease (vector, air, water, contact) Parasites with long-lived transmission stages allowed diseases to establish when a persistent small number of the infected were maintained. The pharaohs" plague snail fever (1900 bc) > the disease originated f/ east africa> the nile> middle east> asia. > involves feces/urine, water, snails & flatworm (blood fluke) > symptoms are bloody urine (hematuria), abdomen & organ enlargement, fever, chills, sweating, anemia & cough. > calcified eggs of the blood fluke are found in the kidneys. > infested fossil snails in the jericho well water is the cause. > irrigation farming in egypt & the fertile crescent allowed the transmission of snail fever causes by blood flukes. > transmission stages of the parasite are microscopic (eggs, miracidia & cercariae)

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Chagas disease transmission can occur in many cases without being directly bitten by a kissing bug. How does inadvertent contact, cultural practices, and the transmission of parasites in the blood can cause Chagas disease? Which of these non-vector forms of transmission were directly targeted in control and prevention campaigns by INCOSUR and what measures did they take?

cyanporcupine115

1) List a viral, bacterial, and eukaryotic microbe that can cause a digestive infection. With these three microbes, include the following for each :

a. mode of transmission

b. disease symptoms

c. prevention

d. treatment

2). STDs are on the rise again with a disproportionate number of 15-24 year olds becoming infected. Describe how one STD can infect a young person, but cause ramifications that could affect the patient for the rest of their life. Make sure to include the mode of transmission, symptoms, treatment of the disease and long-term prognosis

orangeox345

Match each of the descriptions given below (symptoms, geographicdistribution, mode of transmission, etc.) with the viral diseasethat is the most likely cause. (Hint: look up all of the virusesand the diseases they cause, then try to do the problem.)

A yellow fever

B herpes (HSV-2)

C measles (rubeola)

D rotovirus

E ebola fever

F rabies

G HPV-16 (human papilloma virus)

H smallpox

1.The patient, who is a sexually active young adult, has genitalwarts.

2. The patient is a baby who was hospitalized because ofdehydration due to severe diarrhea. Patient also displays vomitingand low grade fever. An electronmicrograph of a stool sample showsa nonenveloped virus with an icosahedral symmetry (sort of round)that is about 70 nm in diameter.

3. The disease is an extremely severe hemmorhagic fever that isthought to be transmitted by contact with blood or bodily fluidsfrom an infected person (or possibly an animal but the naturalreservoir for this virus is currently unknown). An electronmicrograph shows the virus to be filamentous. Infections arefrequently fatal with most cases occurring in The Rebublic ofCongo, Zaire and Uganda.

4. The disease is a hemmorhagic fever that is transmitted bymosquitoes. An electron micrograph shows the virus to have anenveloped icosahedral capsid. The disease used to be common in Cubaand Panama. A patient suffers from internal bleeding that resultsin jaundice.

redwallaby916

HLTB21H3 Chapter : HLTA01 Ch 3

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