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How is virus spreading ? Those who are unvaxed can't travel, vaccine is 95% effective.
The mRNA vaccines are 95% effective against the “original” virus and the efficacy was against moderate-severe illness not all infections, including “silent” infections. So, fast forward to now with the Delta variant virus. The mRNA vaccines are still >90% effective against the Delta variant when you look at prevention of hospitalization and death, but not as high for preventing mild illness nor for preventing “silent” infections. So, vaccination does not completely (100%) prevent transmission. From the very beginning, public health advocates have been saying that we need to practice masking, physical distancing, staying home when ill, etc. to reduce transmission. Now that we have vaccines, we can further reduce transmission, but that does not mean that masking, distance, etc. no longer are necessary.
