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... effect of vaccines. It is noted that the effect of vaccination fades away faster in people over 70 years old, as well as in people with concomitant diseases. Hopkins emphasized that the vaccine can protect a conditionally healthy 30-year-old person from disease for a long time. However, citizens from risk groups need not to delay and undergo revaccination after six months. The British authorities positively assess the rate of vaccination (45.8 million people received both components - 68% of the population), but the statistics on revaccination are much lower (only 10.3 million Britons did it)....
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