Coronavirus case numbers have plummeted across much of the U.S., including Texas, a promising sign that COVID-19 could finally be waning. But the pandemic is far from over, especially for older adults, people with disabilities and other vulnerable populations. Plus, BA.2 and other variants or subvariants are still out there. These are the six things we should keep an eye on in the months to come. 1. Second booster shot, COVID-19 vaccine for kids There’s not yet a vaccine authorized for children under 5 years old. Moderna announced Wednesday that it would ask regulators in the U.S. and Europe t…