Immunisations Flashcards
Why isn’t pertussis disappearing?
The vaccine isn’t as immunogenic as other vaccines - protection doesn’t last as long
Why is measles coming back?
Return travellers
Anti-vaxxers
What is the classic physical sign of diphtheria? How does it kill?
White tonsillar exudate
Airway obstruction
Smooth muscle dysfunction - arrhythmia
Why admit whooping cough?
Assist feeding
Oxygen
Apnoea
What are you concerned about with whooping cough?
Hypoxic brain injury
How do you diagnose pertussis?
Throat/nose swap - PCR - quicker
Blood serology
How is pertussis mx?
Macrolides - clarithromycin
- only changes course of illness if caught in early stages, otherwise it only reduces infectivity
What is the natural history of pertussis?
Cough lasts months
Which vaccinated organism can cause peri-orbital cellulitis?
HiB
Staph and strep otherwise
How is Hib treated?
3rd generation cephalosporin
How does tetanus present?
Muscular spasm - starts at the jaw, can spread to muscles throughout
What be used instead of vaccination in the context of tetanus? When do you use it?
Passive Ig
If unvaccinated in large injury
How does mumps present?
Temperatures
Painful, swollen glands
Orchitis
Encephalitis
How does polio present?
Flaccid paralysis that may be reversible
Depending where it effects the phenotype will be different
How does the rash in VZV appear?
Vesicular rash
Varying size
Pleomorphic
Centrally distributed
Why vaccinate against VZV?
Secondary cellulitis in primary infection
Shingles
When do you use ZiG? When is it effective?
Pregnant
Immunosuppressed
First 72hours
How does measles present?
High fever Cough Conjunctivitis Coryza Pneumonia Encephalitis (1/1000)
How can rubella present?
If contracted in utero Cataracts Deafness Heart disease Growth restriction
Mild temperature, arthralgias, mild illness
What age groups are susceptible to meningococcal?
over 5
Teenagers
How do you treat meningococcus?
Cefotaxime or ceftriaxone
Benzylpenicillin (penicillin G) if 3rd gen cephalosporin is not available
Why can’t you use the meningococcus travel vaccine in kids?
Doesn’t work as it’s a conjugated vaccine
Where does strep pneumoniae effect?
Lungs
Brain
What are common side effects of vaccines
Local
- swelling, pain, redness
- Lump at the sight - can last for months
Generalised
- Mild fever, irritable, cry/drowsiness
- Muscle aches
- Fainting
- Protracted crying
Rare
- Convulsion - Hypotonic, hyporesponsive episodes - thought to be vasovagal
- Anaphylaxis
- Intussusception
Which vaccines are live? How do the side effects differ?
MMR
Varicella
Rotavirus
- SE occurs 7-10 days as it reflects the natural history of the disease mostly
How do you vaccine someone on chemo?
Don’t give them the live vaccine as it’s dangerous
Other vaccines won’t work
- Wait 6 months
Household contacts should be given vaccine
What are some relative contraindications?
Evolving neurological illness
Temperature >38.5
Egg allergy - still able to given, but give in hospital