A 77-year-old man with adenocarcinoma of the colon and emphysema resulting from 50+ years of smoking had an exacerbation of his health in the last 3 months, requiring home oxygen and high- dose corticosteroid use. He presents to the family doctor with shortness of breath and congestion and was prescribed a 10-day course of Bactrim and an increase in corticosteroid dosage which results in improvement of his condition. Upon completion of antibiotics, the patient suffers from another exacerbation of symptoms; resulting in nausea, vomiting, a productive, purulent cough and decrease in PO2 requiring hospitalization. Upon admission the patient is given an oxygen mask to increase PO2, and an expectorated sputum sample is collected for Gram stain, routine bacterial culture and fungal culture. The sputum Gram stain is shown below; documenting on 400X magnification a of filariform larvae, no WBC are seen. Subsequent bacterial culture results in growth of normal respiratory microbiota only and the fungal culture is no growth after 1-week. question 1: question 2: question 3: question 4: question 5: A Nematode that has a lung phase as a part of their life cycle will be: All of the answers are correct Ascaris lumbricoides Ancylostoma duodenale/Necator americanus Strongyloides stercoralisGiven additional patient history information that this individual is a retired school teacher that has lived in Falmouth on Cape Cod his entire life only leaving when as a marine from 1968 to 1971 he was deployed on active duty to Vietnam during the war. Given this additional information, what nematode is the most likely causative agent of this infection? Strongyloides stercoralis Ascaris lumbricoides Ancylostoma duodenale Necator americanusWhy is this nematode able to persist in the host for a long period of time? Potential for autoinfection Loeffler's syndrome and difficult to elminate from pulmonary tissue Resistance to anti-parasitic treatments This is recognized as a self-antigen by the host therefore a protective immune response is not produced.Organ transplant patients must be screened for this isolate to prevent hyperinfection syndrome and fatal outcomes. True FalseWhich white blood cell is increased in number during infections with this parasite? Eosinophils Macrophage Innate Lymphoid Cells T cells.

1. A 77-year-old man with adenocarcinoma of the colon and emphysema resulting from 50+ years of
smoking had an exacerbation of his health in the last 3 months, requiring home oxygen and high-
dose corticosteroid use. He presents to the family doctor with shortness of breath and congestion
and was prescribed a 10-day course of Bactrim and an increase in corticosteroid dosage which
results in improvement of his condition. Upon completion of antibiotics, the patient suffers from
another exacerbation of symptoms; resulting in nausea, vomiting, a productive, purulent cough
and decrease in PO2 requiring hospitalization. Upon admission the patient is given an oxygen
mask to increase PO2, and an expectorated sputum sample is collected for Gram stain, routine
bacterial culture and fungal culture. The sputum Gram stain is shown below; documenting on
400X magnification a of filariform larvae, no WBC are seen. Subsequent bacterial culture results in
growth of normal respiratory microbiota only and the fungal culture is no growth after 1-week.
question 1:
question 2:
question 3:
question 4:
question 5:
A Nematode that has a lung phase as a part of their life cycle will be: All of the answers are correct
Ascaris lumbricoides Ancylostoma duodenale/Necator americanus Strongyloides stercoralisGiven
additional patient history information that this individual is a retired school teacher that has lived in
Falmouth on Cape Cod his entire life only leaving when as a marine from 1968 to 1971 he was
deployed on active duty to Vietnam during the war. Given this additional information, what
nematode is the most likely causative agent of this infection? Strongyloides stercoralis Ascaris
lumbricoides Ancylostoma duodenale Necator americanusWhy is this nematode able to persist in
the host for a long period of time? Potential for autoinfection Loeffler's syndrome and difficult to
elminate from pulmonary tissue Resistance to anti-parasitic treatments This is recognized as a
self-antigen by the host therefore a protective immune response is not produced.Organ transplant
patients must be screened for this isolate to prevent hyperinfection syndrome and fatal outcomes.
True FalseWhich white blood cell is increased in number during infections with this parasite?
Eosinophils Macrophage Innate Lymphoid Cells T cells