Friday, 16 Jul 2021 09:06 AM MYT Siam Bioscience is owned by King Maha Vajiralongkorn. — Reuters pic Follow us on Instagram and subscribe to our Telegram channel for the latest updates. BANGKOK, July 16 — AstraZeneca is seeking to delay delivery of 61 million doses of its Covid-19 vaccines to Thailand by five months, a Thai official said Thursday, as the South-east Asian country weighs vaccine export curbs to shore up domestic supplies. At the centre of the drug maker’s regional supply challenge is its local production partner Siam Bioscience, which has been shrouded in a veil of se...