Lyme disease is a bacterial infection transmitted by black-legged ticks carrying Borrelia burgdorferi. Early symptoms often look like mild flu—fatigue, low-grade fever, headache—plus the classic ...

Covid has caused serious amounts of chronic illness. Research advances may help not only people facing chronic illnesses ...

Meningitis can be a frightening diagnosis. Our expert guide breaks down the different types—bacterial, viral, and fungal—and ...

We included controlled studies with a parallel group or cross-over design, quasi-randomised studies, controlled before-and-after and interrupted time-series studies on the effects of indoor air ...