The new crown vaccine is safe and effective, the elderly are vaccinated, and the whole family is at ease The new crown vaccine is safe and effective, the elderly are vaccinated, and the whole family is at ease The new crown vaccine is safe and effective, the elderly are vaccinated, and the whole family is at ease The new crown vaccine is safe and effective, the elderly are vaccinated, and the whole family is at ease The new crown vaccine is safe and effective, the elderly are vaccinated, and the whole family is at ease Source: China Health Education WeChat public account