susceptible

synonym: vulnerable
https://doi.org/10.1351/goldbook.16119
Describing a group of organisms more vulnerable to a given exposure than the majority of the population to which they belong.
Note: Susceptibility may reflect gender, age, physiological status, or genetic constitution of the organisms at risk.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1317 [Terms] [Paper]