TAIPEI – There is pressure on Chinese pharmaceutical companies to present clinical evidence that their leading Covid-19 vaccines are working after early data from three western-developed shots showed promising efficacy against the disease.
Earlier this week, AstraZeneca PLC and Oxford University said their vaccine candidate is between 62% and 90% effective and joins two other Western vaccine rivals in providing the data. The results could allow the United States and other countries to grant official licensing and increase dissemination …
