Emerging Genotypes of Human Respiratory Syncytial Virus Subgroup A in Japan Shobugawa Y et al. - This is the first articles to show a possible correlation between an emerging genotype NA2 and big outbreaks of HRSV in Japan. Continuing studies to follow up the genetic changes and to clarify the mechanism of re-infection in HRSV are important steps to understand HRSV infections. [more...]