The Copley Medal is arguably the highest British and Commonwealth award for scientific achievement, and has been included among the most distinguished international scientific awards. It is awarded to "senior scientists" irrespective of nationality, and nominations are considered over three nomination cycles. Since 2022, scientific teams or research groups are collectively eligible to receive the medal; that year, the research team which developed the Oxford–AstraZeneca COVID-19 vaccine became the first collective recipient. John Theophilus Desaguliers has won the medal the most often, winning three times, in 1734, 1736 and 1741. In 1976, Dorothy Hodgkin became the first female recipient; Jocelyn Bell Burnell, in 2021, became the second.