4-1 Orthomyxo Flashcards
(44 cards)
Subtypes are dt antigenic variations of surface glycoproteins
HA
NA
Antigenically stable
Type C
LRTI caused by?
Abc
Rsv
Parainfluenza
Proteins of ortho
9 sp
1nsp
CAuses highly infectious viral illness
Orthomyxo
Found in mosquitoes, ticks, and banded mongoose
Thogotovirus
7 segments?
C
Enveloped?
Yes
For Release of virus
Neuraminidase
For Core receptor
Nucleoprotein
Protein For attachment
Hemaglutinin
For regulation of mrna splicing
Ns1 ns2
Antiviral drugs target what?
M2 protein
Target of neutralizing antibodies
Hemagglutinin
Ha causes antigenic changes of what?
Minor drift
Major shift
Describe the receptor for HA
Trisaccharide of sialic, gal, glu
Neuraminidase is important in determination of what?
Subtypes!
THGSY is?
Standard nomenclature
Human and animal strains
A
Human and swine
C
Ha has ? Subtypes?
15
Hiw many subtypes of ha and na recovered in humans
4ha
2 na
H5n1?
Chickens to humans
Shift or drift?
New subtype
Minor
Pandemic
Shift
Drift
Shift