This is the 543rd most frequent Hebrew word.
החיסונים
The vaccines.
The word "החיסונים" refers to vaccines as a preventive measure in a medical context.
החיסונים יעזרו להפחית את התפשטות המגפה.
The vaccines will help reduce the spread of the epidemic.
Here, "החיסונים" is used to indicate vaccines causing a positive societal health outcome.
בגלל החיסונים, המחלות הללו כבר אינן נפוצות בצורה נרחבת.
Thanks to vaccines, these diseases are no longer widespread.
In this sentence, "החיסונים" refers to various types of vaccines being discussed for their medical effectiveness and characteristics.