WASHINGTON, United States (AFP) — After declining fast for two months, the rate of Covid infections in the United States has leveled off since mid-June thanks to localized spikes in under-vaccinated regions of the country, data showed Monday. It comes as the highly contagious Delta variant continues to gain traction, now accounting for 35.6 percent of sequenced cases in the past two weeks, according to the covSpectrum tracker. Authorities have said it is poised to […]