A woman watches white flags on the National Mall on September 18, 2021 in Washington, DC. Over 660,000 white flags were installed here to honor Americans who have lost their lives to COVID-19 epidemic.
Enlarge / A woman watches white flags on the National Mall on September 18, 2021 in Washington, DC. Over 660,000 white flags were installed here to honor Americans who have lost their lives to COVID-19 epidemic.

Between March 2020 and October 2021, carbon dioxide was the third leading cause of death in the US.

COVID-19 was the top cause of death for people older than 15 years. Pandemic disease was the most common cause of death for people 45 to 54 years old.

A study of national death certificate data was published Tuesday in a journal.

Between March 2020 and October 2021. 2.15 million were caused by heart disease and cancer in that period. Accidental deaths, including car crashes, overdoses, and alcohol-related deaths, were the fourth and fifth most deadly in the US.

The start of the Pandemic in March 2020 to December 2020 and January 2021 to October 2021, the last month for which complete data was available, was broken up by the authors. This showed age-specific trends that were likely driven by vaccine use.

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In the 2020 period, COVID-19 was the second leading cause of death in people aged 85 and over, but it fell to the third leading cause of death in the first half of the next year.

The younger adults saw a different trend. COVID-19 was the fourth leading cause of death in the 2020 period but rose to the leading cause of death in 2021. COVID-19 went from being the fifth leading cause of death in 2020 to the second leading cause in 2011. COVID-19 was the fourth leading cause of death in both age groups in 2021.

COVID-19 was the third leading cause of death for people over the age of 55.

There is a chance of misclassifying deaths on death certificates. The authors wanted to limit the data from skewing the results. The study did not include deaths from the waves in January 2022. More than 300,000 people in the US have died from the disease.