Immunisation Flashcards
Types of vaccination
Live and non live
Live vaccination MMR. Shingles, BCG. Rotavirus
Don’t give LIVE vaccinations in immunocompromised
Live vaccination stimulates b and T cells
Ampification works in live vaccinations mimics the natural infection
Live usually only need 2 vaccinations
Non LIVE fewer antigens
B cells»_space;> T cells
No amplicfication
There fore need 3-4 vaccinations to get immunity
Maternal antibodies cross the placenta which ones and how does that effect immunization
1 pertussis crosses and protects the infant till the vaccinations work
2 measles Ab DONT give the mmr till 12/12 because covered till then
Give earlier in high risk measles places
Infants have an immature immune system what steps do we take with. Immunization to address this
1 repeated doses
2 adjuvants enhance the immune response to an antigen eg Al
3 conjugation. ( linking Ag to a carrier proteins. Pneumococcal, HIB, Men C prevent
Repeated doses in immunizations
Too close together not enough time for the memory to develop
2 close enough to provide protection ASAP
3 increasing the gap does not increase the efficacy
4 boosting an extra dose to boost declining ab concentrations
Conjugat Vs polysaccharide
Conjugated immunogenic <2years
HIB, men CCV prevenar
T cell dependent
High avidity ab
Polysaccharide Menceavx pneumovax T cell INDEPENDENT Poorly immunogenic <2 Need rpt doses Immune tolerance
Under immunized groups 3
Highly educated and skeptical
Disadvantaged families
Conscientious objectors
Each pregnancy
Pertussus it works 91-93% effectiveness <8 weeks
Influenza
DTpa
When 6/52 4,6 months
Booster 18/12 4 years
And booster 15-17 years dTPA given in adolescents not DTpa given in childhood
True
Vaccination of household contacts of the immunosuppressive
Yes do vaccinate those people
Rotavirus vaccination
Not given after 6/12 of age
Intussecption 6 extra case per year in Australia with Rotavirus vaccination
Given3 oral dose 2,4,6
Min time apart 4 weeks
HPV vaccinations
46% reductions in HGEA
Herpes zoster vaccination
Live vaccination
Not to be given in the immunocompromised
50% get a mild skin reaction at the site
70-79years
Who is at higher risk of meningitis meningococcal
1 infants and young children <24/12 2 adolescents 15-19yrs 3 children and adults at high risk of MM eg Complement component disorders Function/anatomatical asplenism
Recommend prophylactic use of panadol in all vaccination t/f
False
Only with every dose of 4CMenB administers to children <2 years
Doctors are a crucial source of information about vaccination
True 84% get there info from that