• Jiji

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As Japan plans to start booster shots of COVID-19 vaccines for people who have been inoculated twice, studies have shown that the efficacy of the vaccine tends to fall among older people and those who smoke and drink.

With over half of Japan’s population having completed their two shots, the government is looking at the possibility of making vaccinations a prerequisite for relaxing restrictions on activities, highlighting the importance of the efficacy of inoculations.

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