Respiratory Syncytial Virus Outbreak in a Long‐Term Care Facility Detected Using Reverse Transcriptase Polymerase Chain Reaction: An Argument for Real‐Time Detection Methods

Abstract

OBJECTIVES: To report an outbreak of respiratory synctyial virus (RSV) in a long‐term care facility (LTCF) during ongoing routine respiratory illness surveillance. DESIGN: Rapid antigen testing, viral culture, direct fluorescent antibody (DFA) testing, and reverse transcriptase polymerase chain reaction (RT‐PCR) testing for up to 15 viruses in symptomatic residents and chart review. SETTING: A 120‐bed LTCF. MEASUREMENTS: Comparison of rapid antigen testing, respiratory viral cultures, and DFA testing and RT‐PCR in residents with symptoms of a respiratory tract infection. RESULTS: Twenty‐two of 52 residents developed symptoms of a respiratory tract infection between January 29, 2008, and February 26, 2008. RSV was detected using RT‐PCR in seven (32%) of the 22 cases. None of the seven cases had positive RSV rapid antigen testing, and only two had positive culture or DFA results. This outbreak occurred during a time when state wide RSV rates were rapidly declining. One patient was admitted to the hospital during the infection and subsequently died. CONCLUSION: RSV may cause outbreaks in LTCFs that traditional diagnostic methods do not detect. RT‐PCR can provide a more timely and accurate diagnosis of outbreaks, which allows for early symptomatic treatment, rational use of antibiotics, and improved infection control.