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Assessing Respiratory Immune Responses to Haemophilus Influenzae
Published on: June 29, 2021
[Two cases of invasive Haemophilus influenzae type f infection]
Jette Dettmann Nielsen1, Jens Wentzel Lind, Britta Bruun
1Paediatrisk Klinik, Rigshospitalet, DK-2100 København Ø. jettjeff@dadlnet.dk
Insights
Invasive Haemophilus influenzae type f infections, though rare, can cause serious illness like meningitis and bacteremia. Awareness of non-type b strains is crucial for effective treatment, even with widespread Hib vaccination.
Area of Science:
- Microbiology
- Infectious Diseases
- Pediatrics
Background:
- Widespread vaccination against Haemophilus influenzae type b (Hib) has significantly reduced invasive Hib disease in children.
- Physicians rely on vaccination programs to control common bacterial infections.
Observation:
- Two cases of invasive Haemophilus influenzae type f infection were observed: a neonate with meningitis and an elderly woman with arthritis and bacteremia.
- These cases highlight infections caused by a non-vaccine-targeted strain of H. influenzae.
Findings:
- Haemophilus influenzae type f can cause severe invasive disease in both pediatric and adult populations.
- The incidence of invasive Hib disease has decreased due to vaccination efforts.
Implications:
- Healthcare providers must maintain awareness of non-type b invasive H. influenzae infections.
- Diagnostic and treatment strategies should consider non-type b strains of H. influenzae.
- Continued surveillance for non-type b H. influenzae is important for public health.
Abstract:
Two cases of invasive Haemophilus influenzae type f infection are presented: a three-week-old boy with meningitis and a 62-year-old woman with arthritis and bacteremia. Since 1993 vaccination against H. influenzae type b (Hib) has been offered to Danish children. The result has been a remarkable decrease in invasive Hib disease. However, physicians need to be aware of the existence of non-type b invasive H. influenzae disease.
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