Children under 5 years old can receive the coronavirus vaccine at the Hudson County Vaccine Distribution Center in Kearny starting Wednesday, Hudson County Executive Tom DeGise and the county vaccine task force announced. The vaccine, previously available to all other age groups, was approved for children from 6 months to 4 years old over the weekend. Of the 189,359 confirmed cases in Hudson County, 3.2% have been under 5, or roughly 6,000 cases. Registration for appointments is underway, and county officials are urging residents to make sure that all eligible members of their families get vac…