INTRODUCTION: Human metapneumovirus (HMPV) is responsible for respiratory infections in children and immunocompromised adults and elders. It is commonly diagnosed by immunofluorescence or molecular biology. OBJECTIVE: To detect HMPV in clinical samples by polymerase chain reaction (PCR) and direct imunofluorescence (DIF) methods. RESULTS: Two percent of 202 samples were positive for DIF and 4% of them for reverse transcriptase PCR (RT-PCR), respectively. Considering RT-PCR as gold standard, DIF sensitivity and specificity were 50% and 100%, respectively. CONCLUSION: Not only does the study show that RT-PCR is the best method for HMPV detection in clinical respiratory samples but it also substantiates the importance of test standardization in laboratory routine.
Human metapneumovirus; Respiratory infections; Virus molecular diagnosis