Eli Schwartz from the GeoSentinel® Tel Hashomer site in Israel has alerted us to a number of cases of dengue fever in Israeli travelers returning from a group tour to the Seychelles islands during the period April 13th to 22nd , 2017. The group included 32 travelers and each day they visited a different island. The islands visited, in consecutive order, were: Mahe, Curieuse, Aride, Praslin, La digue and Moyenne. Febrile illness started 1-2 days after return to Israel in 9 of the travelers. In 6 of the febrile travelers DF was confirmed, in 4 by PCR and in the other 2 only by positive IgM serology. The other 3 were not tested for dengue. The PCR positive cases were all DENV-2. Laboratory workup was done by Dr. Yaniv Lustig at Central Virology Laboratory, Israel Ministry of Health, Chaim Sheba Medical Center and by Prof. Dana Wolf at Hadassah Medical center, Jerusalem Israel. Apart from the above-mentioned Israeli cases, only one recent case in the GeoSentinel® database, from December 2016, was acquired in the Seychelles. This cluster of cases may signal an outbreak or increased dengue fever activity on these islands. Intending travelers should be advised to adhere to effective measures against mosquito bites during the daytime and early evening.
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Eli Schwartz from the GeoSentinel® Tel Hashomer site in Israel has alerted us to a number of cases of dengue fever in Israeli travelers returning from a group tour to the Seychelles islands during the period April 13th to 22nd , 2017. The group included 32 travelers and each day they visited a different island. The islands visited, in consecutive order, were: Mahe, Curieuse, Aride, Praslin, La digue and Moyenne. Febrile illness started 1-2 days after return to Israel in 9 of the travelers. In 6 of the febrile travelers DF was confirmed, in 4 by PCR and in the other 2 only by positive IgM serology. The other 3 were not tested for dengue. The PCR positive cases were all DENV-2. Laboratory workup was done by Dr. Yaniv Lustig at Central Virology Laboratory, Israel Ministry of Health, Chaim Sheba Medical Center and by Prof. Dana Wolf at Hadassah Medical center, Jerusalem Israel. Apart from the above-mentioned Israeli cases, only one recent case in the GeoSentinel® database, from December 2016, was acquired in the Seychelles. This cluster of cases may signal an outbreak or increased dengue fever activity on these islands. Intending travelers should be advised to adhere to effective measures against mosquito bites during the daytime and early evening.