This is the 15951st most frequent Russian word.
профилактика
Prevention or maintenance.
In this sentence, 'профилактика' is used to mean 'prevention,' referring to measures taken to prevent diseases.
Профилактика заболеваний включает правильное питание и регулярные физические упражнения.
Disease prevention includes proper nutrition and regular physical exercises.
Here, 'профилактика' refers to actions or programs aimed at preventing the flu among students.
В школе проводили профилактику против гриппа, предлагая вакцинацию ученикам.
The school conducted flu prevention by offering vaccination to students.
In this context, 'профилактика' is used to mean 'maintenance' or 'preventive actions,' aimed at keeping computer systems operational.