US coronavirus vaccine trials raise hopes Chinese drugs will also prove effective, says pharma chief

• CanSino’s co-founder Zhu Tao says the positive results reported by Moderna and Pfizer suggest it would ‘not be difficult’ to reach high efficacy rates
• Chinese drugs may not reach the 90-plus per cent level of the US products, but they would still be ‘successful’ if they hit 70 or 80 per cent