english: Sixth, it would be low-cost and be cost-effective (worth the cost).[41] A few vaccines had been tested by 2009.[20][38][41] Scientists hope that the first vaccine (or vaccines) will be commercially available (available to buy) by 2015.[26]
non_english: Kaping nem, vaksin berbiaya rendah lan efektif (sesuai biayane).[40] Saperangan vaksin wis kauji ing 2009.[19][38][40] Para ilmuwan ngarepake awadene vaksin pertama (utawa beberapa vaksin)bakal tersedia secara komersial (bisa ketuku) ing 2015.[25]