Explainer: Are Chinese Covid-19 shots effective against the Delta variant?

Many countries from China to Indonesia and Brazil rely heavily on Chinese vaccines to inoculate their people against Covid-19, but there are growing concerns about whether they provide enough protection against the Delta variant, first identified in India.

Below are views from China's health experts about the effectiveness of home-grown vaccines against the Delta, which is becoming the globally dominant variant, and virus preventive measures China is taking.

Do Chinese vaccines work against Delta...