excess deaths       
noun [ plural ] uk/ˌek.ses ˈdeθs/ us/ekˌses ˈdeθs/
 超额死亡
deaths during a particular period above the usual, expected number of deaths under normal conditions, which can show the effect of something like a disease or harmful event
  Not all excess deaths during the pandemic were directly caused by the virus. 在病疫大流行期间,并非所有超额死亡都是由病毒直接造成的。 
 A team at Harvard estimated nearly 4,700 excess deaths in Hurricane Maria's aftermath.  哈佛大学的一个团队估计,飓风玛丽亚过后,有近4700人超额死亡。 
 Synonym: excess mortality
 - More examples
 - Even a 4 percent increase in pollution can translate into thousands of excess deaths each year.
 - Last summer, 2,000 "excess deaths" associated with the heatwave were recorded.
 - The excess deaths were not just in high-risk patients but in all patients.
 - Deprivation accounts for approximately 40% of the excess deaths.