Head lice & bacteria: Partners in crime
Head lice aren’t alone when they are in your child’s hair. Whilst humans are host to head lice, lice are in turn hosts to bacteria.
Feb 21, 2026 · 4 min read
TL;DR
Head lice can carry bacteria, and scratching can introduce infection. This is rare. Focus on treating lice promptly with silicone- or oil-based products or wet combing to reduce itching and complications.
Head lice come with lots of bacteria
Research shows lice can harbour bacteria on their bodies. When lice bite the scalp, and when people scratch, bacteria can enter broken skin.
What we know about the bacteria lice carry
Most lice infestations don't cause serious infection. Keeping nails short and avoiding aggressive scratching helps. Treat lice early to reduce itching. Check first. Infected sores? See a GP. Clinics can help with removal.