Photo taken on Sept. 7 shows Indonesian government employees using truck to make fog to prevent the spread of the Dengue Fever and Zika virus carried by mosquitoes at Juanda International Airport in Surabaya, Indonesia. The Indonesian health ministry has stepped up measures to prevent further spread of Zika virus in the country. (Xinhua/Kurniawan)
SINGAPORE, Sept. 8 (Xinhua) -- The analysis of the Zika virus found in two locally transmitted cases in Singapore shows it belongs to Asian lineage and likely evolved from a strain already circulating in Southeast Asia since 1960s, according to Singapore's Ministry of Health and Agency of Science, Technology and Research on Thursday.
Currently, there is no evidence indicating whether the differences between these strains and the South American virus correlate with differences in severity or type of disease, said the ministry and the agency.
