patient zero
pa
ˈpeɪ
pei
tient
ʃənt
shēnt
ze
ziə
ziē
ro
roʊ
row
/pˈeɪʃənt zˈiəɹəʊ/

Definition & Meaning of "patient zero"in English

Patient zero
01

the first person known to have a certain disease, often seen as the starting point of an outbreak

Examples
Identifying patient zero is crucial for understanding how an outbreak began.
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