SHANGHAI, April 10 (Xinhua) -- An increasing number of e-commerce giants and food delivery platforms have joined in the battle against the resurgence of the Omicron variant in Shanghai to secure the megacity's daily supplies. Local authorities confirmed Sunday that e-commerce giants such as JD.com, online food delivery platforms Meituan and Eleme, and courier services companies have cooperated with the city to provide daily necessities for the residents. With a population of 25 million, Shanghai has now become a primary battleground against the virus. It reported over 20,000 new domestic infections on Saturday. The city has employed a temporary closed-off...