Meningitis and encephalitis in children. An update.

Area of Science:

• Pediatric neurology
• Infectious diseases
• Neuroimmunology

Background:

• Meningitis and encephalitis in children have seen significant changes over the last decade.
• Emergence of new pathogens like West Nile virus and Human herpesvirus-6.
• Increased prevalence of antibiotic-resistant bacteria, such as penicillin-resistant Streptococcus pneumoniae.

Purpose of the Study:

• To review the evolving landscape of pediatric meningitis and encephalitis.
• To highlight advancements in understanding etiologies, epidemiology, and treatment.
• To discuss the impact of vaccines and new therapeutic strategies.

Main Methods:

• Literature review of recent studies on pediatric meningitis and encephalitis.
• Analysis of epidemiological data on emerging pathogens and vaccine impact.
• Evaluation of treatment strategies, including the role of dexamethasone.

Main Results:

• West Nile virus and Human herpesvirus-6 identified as significant causes of encephalitis.
• Lymphocytic choriomeningitis virus recognized as a neuroteratogen.
• Penicillin-resistant Streptococcus pneumoniae complicates bacterial meningitis treatment.
• Haemophilus influenzae vaccine has altered disease epidemiology.
• Dexamethasone demonstrates significant improvement in outcomes for bacterial meningitis.

Conclusions:

• Substantial progress has been made in understanding, treating, and preventing pediatric meningitis and encephalitis.
• New viral agents and antibiotic resistance present ongoing challenges.
• Dexamethasone offers a promising therapeutic option for bacterial meningitis.
• Continued research is essential to address remaining knowledge gaps.