Posted: June 21st, 2017
A previously normal, full-term infant developed bilateral conjunctivitis at 2 weeks of age. The conjunctivitis was followed by severe coughing, but the infant remained afebrile. When the infant was 4 weeks old, a chest X ray showed bilateral symmetrical interstitial infiltrates. The white blood cell (WBC) count was 14,000/mm 3 with 32% segmented neutrophils, 58% lymphocytes, 2% monocytes, and 4% eosinophils. Serum immunoglobulin G (IgG), IgA, and IgM levels were e
A previously normal, full-term infant developed bilateral
conjunctivitis at 2 weeks of age. The conjunctivitis was followed by
severe coughing, but the infant
remained afebrile. When the infant
was 4 weeks old, a chest X ray showed bilateral symmetrical
interstitial infiltrates. The white blood cell (WBC) count was
14,000/mm
3
with 32% segmented neutrophils, 58% lymphocytes,
2% monocytes, and 4% eosinophils. Serum immunoglobulin G
(IgG), IgA, and IgM levels were elevated. Which of the following is
the most probable infectious agent?
A.
Chlamydia trachomatis
B.
Streptococcus agalactiae
C.
Haemophilus influenzae
D. Adenovirus
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