This is the 15715th most frequent Polish word.
szczepionek
"Vaccines" (plural form).
The word 'szczepionek' is in the genitive plural form referring to 'vaccines' in a descriptive context.
Liczba szczepionek w magazynie wzrosła.
The number of vaccines in the warehouse has increased.
Here, 'szczepionek' is in the plural genitive case, associated with the word 'rodzajów' indicating types of vaccines.
Zastosowano kilka rodzajów szczepionek podczas badań.
Several types of vaccines were applied during the studies.
In this sentence, 'szczepionek' is in the plural genitive case, associated with 'dystrybucja' indicating the act of distribution involving vaccines.