quiz 4 Flashcards
what temperature can histoplasma grow
a range. its a mold in the cold and a yeast in the beast.
where do we find histoplasma
in caves, bats and birds. Ohio and mississippi river valley
what is the lifecycle of histoplasma
ability to produce micronidia and macronidia
how is histoplasma infective
microconidia and myecelium are inhaled.
what is the range of disease caused by histoplasma
asymptomatic or self-limiting in competent. progressive disseminated even involving the CNS in immunocompromised
HIV family and genome
retrovirdae and 2 copies of ssRNA. encodes reverse transcriptase and protease
is HIV enveloped
yes.
what is antigenic drift, give examples
mutations in the genes for influenza lead to new infections. shift is large genomic recapitulations through coinfections with other viruses. produces a whole new strain of virus and pandemics.
what is zanamavir
this is the neuraminidase inhibitor that. decreases influenza infections
what transmits leishmaniesis
sandfly
where are the most common sites of infection
exposed areas of the skin where the fly can bite.
how long before the lesions appear for leishmaniasis
2-6 weeks. can also be painless
can mucocutaneous leishmaniasis be latent
yes, sometimes it can take years to manifest into lesions.
what is often confused with cutaneous leishmaniasis
cutaneous TB
what is often confused with visceral leishmaniasis
malaria
