Detection vary from day to day…so dont worry and dont read tests you only get more worried
Shadowserver statistic Daily https://www.shadowserver.org/wiki/pmwiki.php/AV/VirusDailyStats Weekly https://www.shadowserver.org/wiki/pmwiki.php/AV/VirusWeeklyStats 1 year https://www.shadowserver.org/wiki/pmwiki.php/AV/VirusYearlyStats