予よ防ぼう的てき治ち療りょう

• 予よ防ぼう

  予防 is the general concept of prevention, while 予防的治療 specifically refers to medical treatment given preventively.

• 治ち療りょう

  治療 is general medical treatment, often curative; 予防的治療 is explicitly preventive.

Compound of 予防 (prevention) + 的 (-like, -ive) + 治療 (medical treatment).