The United States (US) has been through waves, spikes and surges of COVID-19 throughout the pandemic, and now there is concern that the nation may be entering a new winter surge.Sometimes scientists know which factors drive a new rise in cases, but some surges have been inconsistent and hard to predict.Eventually, scientists suspect the rise and fall of coronavirus infections could shift into a more typical seasonal pattern.Early next year, health officials plan to begin serious talks about w