Diplomatic headache as China struggles to get nations to trust its vaccines

China's vaccines were meant to score a clear diplomatic win for Beijing, shoring up ties with dozens of poorer nations amid an anticipated shortage of Western-developed shots

Of all the developing countries testing China’s Covid-19 vaccines, few are friendlier to Beijing than Pakistan. In the years leading up to the pandemic, China financed nearly $70 billion across the South Asian nation on roads, railways and power stations, and Pakistan now has two Chinese clinical trials underway, with even senior government officials being inoculated.

Yet interviews with people in Karachi, the nation’s biggest city -- as well as in other developing nations from Indonesia to Brazil, together with surveys and official comments -- show that China has failed to assure the millions of people who may have to rely