Infectious Disease Part 2 Flashcards
Most common cause of otitis media
Frequent cause of pneumonia, meningitis, and sinusitis
Common cause of bacteremia in infants <24 months old
Streptococcus pneumoniae
Vaccination against streptococcus pneumoniae
Pneumococcal polysaccharide vaccine/Pneumovax in “high risk” children older than 2
Hepatavalent Conjugate Pneumococcal Vaccine/Prevnar which is universal use in children less than 23 months
What causes scarlet fever?
Group A Beta-Hemolytic Streptococci (GABHS)
What is the incubation period for scarlet fever?
2-4 days
How is scarlet fever transmitted?
Infected upper respiratory tract secretions or after wound infection or burns
Abrupt illness, sore throat, headache, vomiting, malaise, abdominal pain, fever, chills, “strawberry tongue”, sandpaper-like skin rash that appears ~24 hours after onset of fever and lasts 1-2 days (face is spared), “pastia’s lines” and there is desquamation of rash over 1-3 weeks (skin peeling)
Scarlet Fever
Treatment for scarlet fever
Penicillin IM ONCE or erythromycin/oral cephalosporins for 10 days
When can children return to school after scarlet fever?
Once afebrile and on antibiotics for 24 hours
Caused by C. diptheriae; transmitted through intimate contact with infected persons or carrier
Diptheria
What is the incubation period for Diptheria?
2-5 days
How long is a person with Diptheria contagious?
Up to 2 weeks
After recovery from diptheria, what is required for the child to get?
DTaP vaccine
Caused by Clostridium tetani; usually enters through scratch or puncture wound
Tetanus
Toxin acts at peripheral motor end plates, spinal cord, and sympathetic nervous system which leads to unopposed muscle contraction and spasm that can continue for 3-4 weeks
Tetanus
What is the incubation period for tetanus?
3 days to 3 weeks
Descending symptoms of trismus (lockjaw), difficulty swallowing, muscle rigidity, spasms
Generalized tetanus
Laryngospasm, fractures, death
Tetanus complications
What is the treatment for tetanus?
Tetanus antitoxin and vaccination
Coxsackie virus; highly contagious; spread by fecal-oral contamination; more common in warm months
Hand-Food-Mouth Disease
What is the incubation period for Hand-Foot-Mouth disease?
3-6 days
Fever, vessicular eruption of buccal mucosa, maculopapular rash involving hands and feet that evolves to vesicles
Hand-Foot-Mouth Disease
When can a child with Hand-Foot-Mouth disease return to school?
Once afebrile
Fifth disease
Erythema Infectiosum
What causes fifth disease?
Human Parvovirus B-19
When is fifth disease/erythema infectiosum most common?
Late winter and early spring
What is the incubation period for fifth disease?
4-14 days
When does rash appear with fifth disease?
2-3 weeks after exposure
When is fifth disease not contagious anymore?
When the rash appears
Bilateral erythema of cheeks followed by lacy, maculopapular rash on body followed by, rash only with trauma to skin
Fifth disease/Erythema Infectiosum
Caused by paramyxovirus; transmitted through droplets or fomites
Measles/Rubeola