CP 6 - Childhood Virus Flashcards
what are some of the conditions seen in children which requires reporting to public health England
acute meingitis, acute poliomyelitis, measles, mumps, rubella, smallpox
what immunoglobulin antibody is present in breast milk?
IgA
which virus cause measles?
paramyxovirus
how is paramyxovirus transmitted?
person to person - droplet spread
how long is the incubation period for measles
7-18 days
what are some clinical symptoms of measles
fever, malaise, conjunctivitis, coryza and cough (3Cs), rash - head to trunk
(Koplik’s spots) then rash + fever + 3Cs cough/coryza/conjunctivits
what does prodrome mean ?
early symptoms
what is conjunctivitis
injection of the conjunctiva
what is coryza
irritation and inflammation of the mucous membrane inside the nose
what is a characteristic for measles which appear before rash
Koplik’s spots - manifest 2-3 days before the appearance of rash
what are some of the complication of measles
otitis media (medial ear infection - can lead to hearing loss), pneumonia, diarrhoea, rare - acute encephalitis, v. rare - subacute sclerosing panencephalitis (v. deadly)
how is measles diagnosed
clinical presentation, leukopenia (reduction in WBC), oral fluid sample, serology
what are treatment for measles
virus - symptoms relief and antibiotic for superficial infection.
what is the prevention of measles
MMR vaccine
which virus cause chicken pox
varicella zoster virus
how is varicella zoster virus transmitted
respiratory spread/personal contact
what is the incubation period of the varicella zoster virus
14-15 days
when will the varicella zoster virus be in infective stage
2 days before onset of rash until after vesicles dry up
what are some of the clinical features of VZV
fever, malaise, anorexia, rash - centripetal (concentrated in the middle of the body) & vesicular
what are some of the complication for VZV
pneumonitis, CNS involvement (shingles), thrombocytopenic purpura (easy or excessive bleeding) , foetal varicella snydrome, zoster
who is at greater risk of more severe complication of varicella zoster viruses
smoker and those who take long term steroids
what are the diagnosis for varicella zoster virus
clinical presentation, PCR - vesicle fluid/CSF, serology (IgG in pregnant women)
treatment for varicella zoster virus
for symptomatic adults and immunocompromised children - aciclovir
how can varicella zoster virus be prevented?
live vaccine, 2 doses & varicella zoster virus immunoglobulin (maybe to immunosuppressed patients, neonates and pregnant woman)
which virus cause rubella
togavirus (RNA virus)
how is togavirus transmitted?
droplet spread - air bourne
incubation period for togavirus
14-21 days
when will togavirus be infective?
one week before rash to 4 days after