News Edition 24: In an attempt to make COVID-19 vaccines available in regions with difficult terrains, the central government is planning to engage Unmanned Aerial Vehicles (UAVs) for deliveries. Reportedly, the HLL Infra Tech Services Limited on Friday invited an Expression of Interest (EOI) on behalf of the Indian Council of Medical Research (ICMR) for the delivery of vaccines and drugs by UAVs in some regions.