Abdala vaccine clinical trial is going well in Cuba Abdala vaccine clinical trial is going well in Cuba Santiago de Cuba, Jan 9 (Prensa Latina) The clinical trial of the vaccine candidate Abdala, one of the four underway in Cuba, is going well today at the Saturnino Lora Hospital in this eastern city, where it has been taking place for the last month. Dr. Rafael Suárez, director of the healthcare center, reported that the intramuscular application of the preparation for immunization against Covid-19 has hardly presented adverse reactions, mainly associated with discomfort in the area of the puncture. He indicated that for the second phase, some 600 voluntary participants will be selected, through a call that will be announced with the pertinent requirements.