Tweens are not teens: the problem of amalgamating broad age groups when making pandemic recommendations.

Demarcating childhood into two distinct and broad 10-year age bands of over and under age 10 is a disservice to our tween population (9-12 years), and may be overlooking our role in understanding the negative impacts of SARS-CoV-2 (COVID-19) during a formative period of development. In this commentary, we discuss the importance of considering tweens as a unique population of youth who are differentially impacted by the COVID-19 pandemic. We first describe the distinctive progress of tweens across various facets of developmental health, followed by recommendations to improve understanding and address impact of the pandemic and its restrictions on tweens. The COVID-19 pandemic has had a large impact on the day-to-day lives of tweens and what we do now will have long-lasting effects on their lifelong trajectories.