The English modal auxiliary verbs are a subset of the English auxiliary verbs used mostly to express modality, properties such as possibility and obligation. [a] They can most easily be distinguished from …

Apr 12, 2025 · Learn the correct usage of ‘would,’ ‘should,’ and ‘could’ in English, including their meanings, differences, and examples to improve clarity and grammar.

3 days ago · For decades, newborns in the U.S. have been given the hepatitis B vaccine. This could change. A CDC vaccine advisory panel may vote to end that routine vaccination. Here's what parents …

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2 days ago · Individual-based decision-making, known on the CDC immunization schedules as shared clinical decision-making, means that parents and health care providers should consider vaccine …