This is actually a good news to all smokers if there's already have a vaccine to prevemt lung cancer.. I always bet before that Cuba has the best doctors despite of US Embargo.. check this out..
Cuba Has a Lung Cancer Vaccine For Years... And America Wants It
Cuba has for several years had a promising therapeutic vaccine against lung cancer. The 55-year trade embargo led by the US made sure that Cuba was mostly where it stayed. Until—maybe—now.
The Obama administration has, of course, been trying to normalize relations with the island nation. And last month, during New York Gov. Andrew Cuomo’s visit to Havana, Roswell Park Cancer Institute finalized an agreement with Cuba’s Center for Molecular Immunology to develop a lung cancer vaccine and begin clinical trials in the US. Essentially, US researchers will bring the Cimavax vaccine stateside and get on track for approval by the Food and Drug Administration.
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Source: http://www.thehealthyarchive.info/2015/05/cuba-has-lung-cancer-vaccine-for-years.html