The Chinese government silenced whistle-blowers, withheld crucial information and played down the threat posed by the new coronavirus, allowing an epidemic that has killed thousands to take hold across the country. Now the ruling Communist Party, facing a storm of anger from the Chinese public over its missteps, is trying to rehabilitate its image by rebranding itself as the unequivocal leader in the global fight against the virus. [Read: ‘No way out’: In China, coronavirus takes a toll on other patients.] The state-run news media has hailed China’s response to the outbreak as a model for the world, accusing countries...