Over the weekend, new daily infections in India crossed 100,000 cases for the first time, with cases soaring higher in other places, such as the Philippines and Ukraine.Meanwhile, upticks in activity have other countries worrying about the start of fourth surges.India surge driven by multiple factorsIn a worsening second surge, India yesterday reported more than 100,000 new cases for the first time during the pandemic, a daily number that only the United States and Brazil have ever recorded, according to the Washington Post.Health officials suspect that a combination of factors is fueling soaring case numbers: behavior changes, waning immunity from earlier infections, and the spread of new variants.Maharashtra state in the western part of