stroke – n. a serious medical condition where a blood vessel becomes blocked or breaks suddenly
dementia – n. a brain disease that causes the loss of the ability to communicate and think
burden – n. the number of cases of a disease
pandemic – n. a dangerous disease that spread across a large area
proportions – n. the relationship that exists between something and its size
antibody – n. a cell that fights infection
fake – adj. false, not true
biosphere – n. all living things
smog – n. thick pollution
premature – adj. appearing or taking place before expected