Recurrent infections with respiratory syncytial virus (RSV) early in life increase susceptibility to asthma. Nandini Krishnamoorthy et al. show that RSV infection of young mice impairs maternally transferred tolerance to allergens. Regulatory T (Treg) cells in infected mice have impaired suppressor function and adopt a TH2-like phenotype.
- Nandini Krishnamoorthy
- Anupriya Khare
- Prabir Ray