Concurrent neonatal Proteus mirabilis infection in dizygotic twins

Area of Science:

• Neonatal Medicine
• Infectious Diseases
• Microbiology

Background:

• Proteus mirabilis is a Gram-negative bacterium known for causing urinary tract infections and sepsis.
• Dizygotic twins share no more genetic material than ordinary siblings, leading to independent immune responses.
• Neonates are particularly vulnerable to severe infections due to immature immune systems.

Observation:

• A case of co-infection with Proteus mirabilis in dizygotic twin neonates is described.
• The first twin developed meningitis and septic shock, ultimately succumbing to the infection.
• The second, initially asymptomatic twin, was found to have a urinary tract infection.

Findings:

• The urinary tract infection in the second twin resolved with appropriate antimicrobial treatment.
• This case highlights the potential for rapid progression and severe morbidity/mortality associated with Proteus mirabilis in neonates.
• Concomitant infections in twins can present with differing clinical manifestations.

Implications:

• Early and thorough evaluation for sepsis in a twin, even if asymptomatic, is critical when the other twin is diagnosed with a virulent infection.
• Empirical antimicrobial therapy should be strongly considered for the unaffected twin to prevent severe outcomes.
• This case underscores the importance of vigilant monitoring and prompt intervention in neonatal co-infections.