In socialist Cuba, medical research isn’t geared towards private profit. Instead, it’s done to improve the lives of not only Cubans but all the people of the world. Recently they developed an immune therapy called CIMAVax which stops lung cancer cells from growing. It is not preventative but has proven effective to save and extend lives. It is free to all Cubans. While Trump makes it illegal to buy Cuban products, thousands of Americans have defied the ban to travel to Cuba which makes the vaccine available to them as well.