A senior resident gets a vaccination against COVID-19 aboard a mobile vaccination vehicle near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
Mobile vaccination vehicles are parked near a business center in Nanjing, east China's Jiangsu Province, April 30, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
A woman gets a vaccination against COVID-19 aboard a mobile vaccination vehicle near a business center in Nanjing, east China's Jiangsu Province, April 30, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
A resident gets on a mobile vaccination vehicle for observation after the COVID-19 vaccination near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
A mobile vaccination vehicle is parked near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 30, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
A man gets a vaccination against COVID-19 aboard a mobile vaccination vehicle near a business center in Nanjing, east China's Jiangsu Province, April 30, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
A senior resident registers for COVID-19 vaccination aboard a mobile vaccination vehicle near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
Mobile vaccination vehicles are parked near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
In this aerial photo, mobile vaccination vehicles are parked near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
Residents are under observation after the COVID-19 vaccination aboard a mobile vaccination vehicle near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)
A senior resident registers for COVID-19 vaccination aboard a mobile vaccination vehicle near a residential neighborhood in Nanjing, east China's Jiangsu Province, April 29, 2022.
The city of Nanjing has been optimizing the process of vaccination to provide more convenient services to citizens, with mobile vaccination vehicles dispatched to residential neighborhoods and business centers. (Xinhua/Li Bo)