 የሰው ዘር ሰምቶትም አይቶትም ወይም ይሆናል ብሎ ገምቶት የማያውቀው ብዙ ሚሊዮኖችን የሚየጠፋ የበሽታ ዓይነት ይከሰታል።
As testing becomes almost universal there are going to be millions that have had it and never knew or thought that they had had allergies or a mild cold.