UPON reading the circular from Bio Farma on Monday, March 15, the head of the Pajangan Subdistrict Community Health Center in Bantul Regency, Yogyakarta, Santoso Hardoyo, hurriedly contacted several drugstores in Yogyakarta. The letter informed Santoso that the Sinovac vaccine expiry date had been cut short from November 2023 to March 2021. “We took the initiative to seek out medical workers who had not yet been injected with the second dos