Immunizations Flashcards
Process by which the body makes it’s own antibodies
active immunity
Process by which antibodies are given through exposure
passive immunity
Which type of immunity provides longer immunity in general?
active immunity
Which type of immunity provides temporary protection (few weeks)?
passive immunity
Which type of immunity takes several weeks before protection is provided?
active immunity
Which type of vaccine induces an immune response more consistent with naturally occurring infections?
live vaccine
Which type of vaccine confers life long immunity in a single dose?
live vaccine
What are the live vaccines?
OPV, MMR, varicella, flu mist
What type of vaccine does not induce permanent immunity and requires additional doses (boosters)?
killed vaccine
What are some inactivated vaccines?
pertussis, IPV, hib, hep a/b, flu shot
This stimulates formation of antitoxin antibodies that will neutralize the toxin upon exposure before it can do damage.
toxoid
Tetanus and Diptheria are types of what?
toxoids
This is a sterile solution containing antibodies derived from human or equine sources.
immune sera
Immune sera confers what type of immunity?
passive immunity
Preferred IM site in infants
anterolateral aspect of thigh
Preferred IM site in larger toddlers, adolescents and adults
deltoid
Preferred depth for killed vaccines
Deep IM (not subq due to risks for inflammation, granuloma and necrosis)
Vaccine administration - multiple inactivated vaccines?
Yes, at different sites
Vaccine administration - inactivated and live concurrently?
yes (except cholera and yellow fever - 4 weeks)
Vaccine administration - concurrent live vaccines?
No (except MMR and OPV)
Vaccine administration - live vaccine and PPD?
No
Vaccine administration - live vaccine and immune sera?
No
Vaccine administration - inactivated vaccine and immune sera?
Yes
Immunization during pregnancy - Considerations
No live vaccines, killed vaccines in second trimester
Immunization for preemies - Considerations
Same age, schedule and precautions as full term. Hep B may be delayed 2 months or >2000g.
Immunization for immunocompromised hosts - Considerations
Immune response is typically diminished. May need higher doses or more frequent boosters. Live vaccines can replicate easier.
Immunization if active malignant disease - Considerations
Killed vaccines and toxoids only. Live vaccine leukemic off chemo x 3 months.
Immunization if HIV - Considerations
Suboptimal response
Which vax are contraindicated if anaphylactic reaction to neomycin?
MMR, IPV, varicella
Which vax is contraindicated if anaphylactic reaction to streptomycin?
IPV
Which vax are contraindicated if anaphylactic reaction to eggs?
Flu, yellow fever
What are some factors that affect response to immunization?
viability of antigen (live vs killed), total dose, interval and number of doses, immunocompromise, route/site, length of needle (1 in)
What organisms does the TDAP/DTAP vax protect against?
corynebacterium diptheriae, clostridium tetani (the toxin not the bacteria) and bordetella pertussis
TDAP - live or killed?
killed
s/s diptheria
“bull neck” due to cervical lymphadenopathy
s/s pertussis
AKA whooping cough
inspiratory whoop after a series of paraoxysmal coughing
s/s c. tetani
tetanus from production of exotoxin that blocks glycine release from Renshaw cells in spinal cord
typically hear about “lock jaw” but diaphragm/chest involovement is more significant
Who gets the DTAP?
<7
Who gets the TDAP?
> 7
DTAP
4 doses + booster
IM
refrigerated
Contraindications to Pertussis vax
encephalopathy (within 7 days) seizure (within 3 days) persistent screaming 3+ hours or high pitched cry (within 48 hrs) Temp 104.9 + (within 48 hrs) shock like state (within 48 hrs)
Tx for diptheria exposure
immune sera (equine) For exposed household members, give Benzathine PCN.
Tx for tetanus exposure
tetanus immunoglobulin
Pertussis DOC
Macrolides: E-mycin or azithromycin
s/s measles
“Koplik spots” in the mouth (small white spots), conjunctivitis, coryza, cough x 7 days. Ultimately will get pneumo and encephalitis and die.
s/s mumps
parotitis (inflammation of cheeks), orchitis (inflammation of testes) and aseptic meningitis
MMR vaccine
SQ
2 doses, combo vax
Live vax (no preg or immuno.)
contains neomycin, made from chick eggs (allergy considerations)
Inactive Polio Virus (IPV)
inactivated
preferred over OPV (live)
4 doses
Haemophilus Influenzae Type B Vax
Inactivated
given in children <5 yrs old
IM
Various combinations (PedvaxHIB and Comvax - HIB + HepB), TriHIBit
HIB bacteria responsible for…
meningitis, epiglottitis, pneumo, sepsis, septic arthritis
Strep pneumoniae can cause…
OM, sinusitis, pneumonia
Pneumococcal Conjugate Vaccine (Prevnar 13)
inactivated SQ or IM children 6 wks-59 months 4 doses *we don't see much bacterial OM/sinusitis b/c of this vax
Pneumococcal Polysaccharide Vaccine (Pneumovax 23)
Inactivated
SQ or IM
and adults
Who should get Pneumovax 23?
- immunocompetent adults >65, chronic disease, asplenia, environmental risk
- immunocompromised >2 yrs
- revaccination after 3-5 yrs for kids with nephrotic syndrome, asplenia, SC anemia
Flu shot
Inactivated
IM
Who should get a flu shot?
CV and lung disease, nursing home resident, HC worker, >65 yrs, metabolic disease, pregnant 2/3 trimester during flu season, HIV, household members of high risk groups
FluMist
live vaccine
Who should not get the FluMist?
egg allergy, Guillain-Barre syndrome, immunodeficiency, HIV, malignancy, leukemia, lymphoma, children taking ASA (Reye’s syndrome), pregnant women
Safety in asthmatics is unknow.
Cold vs Influenza
Cold: rare fever, productive cough, rare HA, feel ok, congested, sneezing, sore throat
Flu - feel very sick, sudden onset, temp >101 x 3-4 days, nonproductive cough, seere HA, fatigue
Influenza - treatment
Tamiflu or Relenza
Meningococcal Vaccine
with the HIB vaccine
IM
Who should get the meningococcal vaccine?
- Age 2-10 w/complement deficiencies, asplenia, high risk groups
- 11-18 yrs, previously not vaccinated
- unvaccinated college students in the dorm and anyone living in close quarters
- Revaccinataion at 11-55 yrs old
Varicella Vaccine
live virus
SQ
Who should not get the varicella vaccine?
pregnant, immunocompromised, 3wks before or 5 months after an immune globulin
Hepatitis A vaccination
Killed virus
2 doses
Who should get a Hepatitis A vaccination?
travelers to endemic areas, primate works, male homosexual, food handlers, HC workers
Hepatitis B vaccination
killed virus
3 doses
Induces Anti-HBs
For infants of HBsAg + mothers…
Heb B and HBIG at birth
repeat vax at 1 and 6 months
Hepatitis Immune Globulin
post exposure
within 24 hours or before 14 days after exposure
Start vax series too
HPV vaccine (Gardasil)
HPV proteins 6, 11, 16, 18
Help protect against cervical cancer, cervical adenocarcinoma, vag and vulvar neoplasia and genital warts
HPV vaccine (Cervarix)
provides less coverage
HPV 16 and 18 only (warts)
doesn’t make sense to give
Rotarix or RotaTeq vaccine
live
Rotarix (2 doses by 4th month)
Rota Teq (3 doses by 32 wks)
Only given to infants b/c they are at higher risk from dehydration/lyte imbalance from diarrhea
Vaccine related anaphylactic reaction - s/s
flusing, facial edema, urticaria, itching, swelling of mouth/throat, wheezing, difficulty breathing
Vaccine related anaphylactic reaction - treatment
- maintain airway and provide O2 if needed
- Epi 0.01 mg/kg up to 0.5 mg IM, repeat q 10-20 up to 3 doses
- Benadryl and/or Prednisone
Can the flu vaccine cause the flu?
Flu shot - No (killed)
Remember: takes weeks for immunity
Can vaccines be mixed in same syringe?
No, only if manufactured that way
After a blood transfusion, which vax are CI and for how long?
MMR - 6 months (live)
Varicella - 5 months (live)
Inactivated - OK
Can you give two IM injections in same arm?
Yes, 1 inch apart and document location well in case of ADE.
Which vax cannot be given if the pt is taking steroids?
If 2mg/kg or >20mg of prednisone, considered “high dose” and immunocompromised so no live vax
How long do you have to wait until getting the MMR or Varicella after IG?
3-11 months (remember, T1/2 is long)
Can chemo patients can the flu shot?
Yes (killed)
Why do kids get the pneumococcal conjugate vaccine (prevnar) instead of pneumococcal polysaccharide vaccine (pneumovax)?
Because the polysaccharide vaccine is not effective in children.
What is the leading cause if vaccine preventable death?
Pneumonia
What are the normal and expected side effects if FluMust?
Cough, runny nose, sore throat
What is a main cause of pneumonia, OM, bacteremia and sinusitis?
Strep pneumonia
What does it mean if a vaccine is conjugated?
It contains the antibodies against which immunity is desired.
How does the immune system respond to encapsulated organisms?
Not very well. The immune system does not recognize them so an effective immune response is not triggered and thus infection can occur.
Which immune cell does the prevnar vaccine activate?
CD4+ helper T-lymphocyte