Coronavirus: Thai doctors want Pfizer vaccines amid doubts over Sinovac’s efficacy against Delta variant

For the past five years, Wipa, a doctor in her 20s, has had to adjust to a gruelling shift pattern of 36 hours on, eight hours off, for three to five days a week.The long hours are necessary as she oversees the inpatient wards, outpatient services and emergency room operations of a busy public hospital in Pathum Thani province, on the edge of Bangkok, Thailand.But in recent weeks, the shifts have felt even longer and heavier than usual. The hospital has only 20 doctors, who between them treat…