1.
antivirus measures, virus protection (computing)
Software or measures to protect computer systems from malware and viruses.
2.
virus countermeasures (medical/health)
Protective measures against biological viruses, such as wearing masks or washing hands.
ウイルス対策 is a compound of ウイルス (virus) and 対策 (countermeasure).
Common expressions
- ウイルス対策ソフト: antivirus software
- ウイルス対策を講じる: to take virus countermeasures
- ウイルス対策が万全: virus protection is thorough
Usage
In computing contexts, ウイルス対策 often appears with ソフト (software). In health contexts, it refers to measures like masks, hand washing, and ventilation.