INTRODUCTION: The largest chikungunya epidemic in history hit Reunion Island in 2005/6. At that time, a specific monitoring system was set up. Since the end of the epidemic, this monitoring system has continued to operate and has been enhanced. The main objectives of the system are early detection of any case of chikungunya virus infection and epidemiological monitoring. METHODS: During nonepidemic periods, surveillance is focused on active detection of all cases. During epidemic periods, weekly incidence is estimated using data collected via a sentinel physician network. Occurrence of severe and fatal forms is tracked during all epidemiologic situations. RESULTS: In 2005-2006, the estimated number of symptomatic chikungunya-virus infections diagnosed on Reunion Island was 266 000, i.e., an attack rate of 34%. A total of 222 severe cases and 44 mother-to-child transmissions were recorded. Since the end of the outbreak, two clusters have been detected in the western region of the island in 2010 and 2011. The second cluster was non-negligible since it involved 164 cases including 112 that were biologically confirmed. CONCLUSION: Based on results recorded from 2005 to 2006, the chikungunya monitoring system appears to have good sensitivity and reactivity. Recent detection of two disease clusters confirms the system's efficacy.
INTRODUCTION: The largest chikungunya epidemic in history hit Reunion Island in 2005/6. At that time, a specific monitoring system was set up. Since the end of the epidemic, this monitoring system has continued to operate and has been enhanced. The main objectives of the system are early detection of any case of chikungunya virus infection and epidemiological monitoring. METHODS: During nonepidemic periods, surveillance is focused on active detection of all cases. During epidemic periods, weekly incidence is estimated using data collected via a sentinel physician network. Occurrence of severe and fatal forms is tracked during all epidemiologic situations. RESULTS: In 2005-2006, the estimated number of symptomatic chikungunya-virus infections diagnosed on Reunion Island was 266 000, i.e., an attack rate of 34%. A total of 222 severe cases and 44 mother-to-child transmissions were recorded. Since the end of the outbreak, two clusters have been detected in the western region of the island in 2010 and 2011. The second cluster was non-negligible since it involved 164 cases including 112 that were biologically confirmed. CONCLUSION: Based on results recorded from 2005 to 2006, the chikungunya monitoring system appears to have good sensitivity and reactivity. Recent detection of two disease clusters confirms the system's efficacy.
Authors: Mariola Mascarenhas; Sophiya Garasia; Philippe Berthiaume; Tricia Corrin; Judy Greig; Victoria Ng; Ian Young; Lisa Waddell Journal: PLoS One Date: 2018-11-29 Impact factor: 3.240
Authors: Flavia Riccardo; Giulietta Venturi; Marco Di Luca; Martina Del Manso; Francesco Severini; Xanthi Andrianou; Claudia Fortuna; Maria Elena Remoli; Eleonora Benedetti; Maria Grazia Caporali; Francesca Fratto; Anna Domenica Mignuoli; Liliana Rizzo; Giuseppe De Vito; Vincenzo De Giorgio; Lorenzo Surace; Francesco Vairo; Paola Angelini; Maria Carla Re; Antonello Amendola; Cristiano Fiorentini; Giulia Marsili; Luciano Toma; Daniela Boccolini; Roberto Romi; Patrizio Pezzotti; Giovanni Rezza; Caterina Rizzo Journal: Emerg Infect Dis Date: 2019-11 Impact factor: 6.883