Complex sentence: The Dominican Republic has a 0.7 percent prevalence of HIV/AIDS in the Dominican Republic among the lowest percentage-wise but the second most cases in the Caribbean region, with an estimated 46,000 HIV/AIDS-positive Dominicans, as of 2013.
Split into simpler sentences: The Dominican Republic has a 0.7 percent prevalence rate of HIV/AIDS, among the lowest percentage-wise in the Caribbean region. However, it has the second most cases in the Caribbean region in total, with an estimated 46,000 HIV/AIDS-positive Dominicans as of 2013.