A 20-month-old child, who is unimmunized against Streptococcus pneumoniae and Haemophilus influenzae type b, presents with a fever of 39.5°C (103.1°F) but appears well with a non-focal exam. What is the most appropriate management strategy regarding the risk of occult bacteremia?
A 10-day-old neonate born at home in a developing country is brought in with progressive difficulty feeding, crying, and generalized stiffness. The umbilical stump appears dirty and has remnants of clotted blood. What is the most likely portal of entry for the causative microorganism?
A 16-year-old wrestler presents with a painful, vesicular eruption on his neck and shoulder. He reports a tingling sensation in the area for a day before the rash appeared. He has had similar, milder outbreaks in the same location before. This condition, known as herpes gladiatorum, is a form of which type of infection?
A 4-year-old boy with a known history of asthma presents to the emergency department with a severe wheezing episode triggered by a common cold. A respiratory viral panel is positive for Human Rhinovirus (HRV). What is the established role of HRV in the context of childhood asthma?
You are counseling the parents of a 14-month-old child with sickle cell disease about the differences between pneumococcal conjugate and polysaccharide vaccines. Which characteristic is a key feature of the T-lymphocyte–dependent immune response induced by the pneumococcal conjugate vaccine?
A 5-year-old child is diagnosed with pulmonary tuberculosis and is started on a four-drug regimen including rifampin. When counseling the family, which of the following is a common, benign adverse effect of rifampin that they should be warned about?
A 4-year-old child presents with a fever and an intensely pruritic rash. The rash began on his scalp and trunk and consists of macules, papules, clear vesicles, and crusted lesions all present simultaneously. This clinical picture is most characteristic of which disease?
A group of researchers identify a specific gene deletion that is relatively common in individuals of European descent and is known to confer strong protection against acquiring HIV. This protective effect is most strongly associated with a deletion in the gene that encodes for which protein?
A 12-year-old previously healthy boy presents with a 5-day history of fever, sore throat, malaise, and a new headache. On exam, he has a temperature of 38.5°C (101.3°F), pharyngeal erythema, posterior cervical lymphadenopathy, and mild splenomegaly. A rapid streptococcal antigen test is negative. Which diagnosis is most suggested and can be further evaluated with a complete blood count?
A 16-year-old female presents with a 2-day history of high fever, vomiting, diarrhea, and a diffuse, sunburn-like rash. On examination, she is hypotensive and has a strawberry tongue. A diagnosis of staphylococcal toxic shock syndrome is made. What is the recommended antibiotic therapy for this condition to address both the infection and toxin production?
