UPDATE 1-South Africa's Aspen could produce J&J COVID shots by end-March Reuters 1/7/2021 * Govt says vaccine negotiation with J&J at advanced stage * Aspen to produce up to 300 million doses for J&J * J&J vaccine in final trial, results by end-January (Adds govt, J&J comment) By Promit Mukherjee JOHANNESBURG, Jan 7 (Reuters) - Aspen Pharmacare could start production of Johnson & Johnson COVID-19 vaccines in South Africa by late March or early April if all approvals are in place, a senior company executive said. All the vaccines produced will be exported to J&J and will be a part of its global supply inventory, Stavros Nicolaou, Group Senior Executive, Strategic Trade at Aspen, added.