Bahrain is screening travellers tightening control of its ports from Ebola-hit countries as officials announced intensive training for healthcare workers the health ministry said.Though no Ebola case has been reported in Bahrain the country has issued a guideline for all health care workers on how to diagnose and deal with suspected cases Xinhua quoted Health Minister Sadiq Al Shhabi as saying. The ministry has adopted standard precautions to be undertaken by patients and visitors at the country's main hospital he added.Meanwhile visitors to Bahrain from Ebola-hit countries such as Sierra Leone Guinea Liberia and Nigeria are not granted entry visas.