| molecular epidemiology of human metapneumovirus in riyadh province, saudi arabia. | human metapneumovirus (hmpv) is an important cause of respiratory tract illness in children. two hmpv subgroups, a and b, and four genotypes, a1, a2, b1 and b2, have been identified. concurrent circulation of the different genotypes in yearly epidemics has been recorded globally, but not in saudi arabia. the current report was designed to study hmpv epidemiology in saudi children and to analyze the genetic diversity and circulation patterns. nasopharyngeal aspirates (n = 174) were collected from ... | 2016 | 27694746 |