Influenza Flashcards
Influenza onset
2 days (1-4) after exposure
influenza contagious
1 day before symptomatic and 5-7 days after onset
A/California/7/2009 (H1N1)
A - virus type CA - geographic origin 7 - strain '09 - year o/ isolation H1N1 - virus type
abbrev for influenza vaccines
IIV IIV3 IIV4 RIV/RIV3 LAIV/LAIV4 ccIIV4
IIV
inactivated influenza vacc
IIV3
trivalent influenza vacc
IIV4
quadrivalent influenza vacc
RIV/RIV3
recombinant HA vacc (Flublok)
LAIV/LAIV4
live attenuated influenza vacc (FluMist)
ccIIV4
cell-cultured (Flucelvax quadrivalent)
Types of Influenza Virus that cause human disease
A and B
These types undergo
yearly changes because they respond to avoid human antibodies
Types of yearly changes
Shifts and Drifts
Shifts
major change in Type A antigen
Drifts
minor change in A or B antigens
Type A lineages
human and animal
type A’s in circulation currently
H1N1 and H3N2
Type B lineages
Yamagata and Victoria
Routine annual influenza vacc recommended for all persons aged
6 mo or older who don’t have contraindications
special administration for these children:
children 6 mo through 8 years receiving influenza vacc for 1st time need 2 doses administered at least 4 wks apart
dosing of influenza vacc
0.5 ml IM for > 3 years
6 mo and 35 mo 0.25 ml IM
Cautions for Influenza vaccination should be taken in patients with
egg allergy
may receive vacc if:
- history of egg allergy only results in hives
- if have rxns other than hives
only c/i in patients with severe allergic rxn
when should you begin to offer influenza vacc
soon as it becomes available, no later than oct
how long should you provide influenza vacc
until supply is gone
