PAEDS: CAUSATIVE ORGANISMS Flashcards
Causative organism of chickenpox?
Varicella zoster virus
Causative organism of whooping cough
Bordatella pertussis
Causative organism of scarlet fever
Group A streptococci - usually strep pyogenes
Causative organism of hand, foot & mouth disease
Intestinal viruses of the picornaviridae family - coxsackie A16 and enterovirus 71
Causative organism of erythema infectiosum/slapped cheek syndrome
Parvovirus B19
Causative organism of roseola infantum
Human herpes virus 6 (known as exanthem subitum or sixth disease)
Causative organism of croup
Parainfluenza viruses
Causative organism of bronchiolitis
Respiratory syncytial virus
Causative organism of acute epiglottitis
Haemophilus influenza type B
Causative organism of pharyngitis/strep throat
Group A beta haemolytic strep - strep pyogenes
Most common causative organism of viral conjunctivitis
Adenovirus mostly
Most common Causative organism of otitis media
Strep pneumoniae, haemophilus influenza and moraxella catarrhalis
Causative organism of impetigo
Staph aureus or strep pyogenes
Causative organism of molluscum contagiosum
Molluscum contagiosum virus, a member of the poxviridae family
Causative organism of scabies
Sarcoptes scabies
Causative organism of glandular fever
EBV (aka human herpes virus 4)
Causative organism of threadworms
Enterobius vermicularis (pinworms)
Causative organism of head lice
Pediculus capitis
Most common causative organism of viral-induced wheeze
Rhinovirus
RSV
Most common causative organism of pneumonia
Strep pneumoniae
Most common Causative organism of UTIs
E.coli
(Others: proteus and pseudomonas)
Most common Causative organism of early onset and late onset neonatal sepsis
Early onset sepsis: GBS (75%) and E.coli
Late onset - coagulate-negative staph e.g. staph (others: epidermidis, pseudomonas eruginosa, klebsiella, enterobacter and fungal)
Most common causative organisms of paediatric encephalitis in children and in neonates
HSV-1 in children from cold sores
HSV-2 in neonates from genital herpes
Common causative organisms of meningitis in 0-3 months?
GBS
E.coli
Listeria monocytogenes
Most common Causative organism of septic arthritis
Staph aureus
(Consider neisseria gonorrhoea in sexually active teenagers)
Most common Causative organism of osteomyelitis
Staph aureus
Causative organism of eczema herpeticum
Herpes simplex virus 1 or 2
What is the most common cause of erythema multiforme?
Herpes simplex virus
Causative organism of pityriasis rosea
Herpes hominis virus 7
Most common causative organism of Tinea capitis? What can cause it that comes from pets?
Trichophyton tonsurans
(Microsporum canis can be acquired from cats or dogs)
Most common bacterial cause of conjunctivits?
Streptococcus pneumoniae, Staphylococcus aureus and Haemophilus influenzae.
What can cause ophthalmia neonatorum?
Chlamydia trachomatis and neisseria gonorrhoea
Common causative organisms of meningitis in 3 months-6 years?
Neisseria meningitidis
Strep pneumoniae
H.influenzae
Common causative organisms of meningitis in>6 year olds?
Neisseria meningiditis
Strep pneumoniae
Casualties organism of pityriasis versicolour?
Malassezia furfur
Most common causative organism of Tinea corporis (ringworm)?
Trichophyton rubrum and Trichophyton verrucosum
