Task: Translation
Input (English): The vaccine was tested on 400 Australians aged between 18 and 45 in October last year to determine its safety and effectiveness.
Output (Lao): ວັກຊີນນີ້ຖືກທົດລອງໃຊ້ກັບຊາວອົດສະຕາລີສະເລ່ຍ 400 ຄົນໃນລະຫວ່າງອາຍຸ 18-45 ປີ ເມື່ອເດືອນຕຸລາປີທີ່ແລ້ວເພື່ອທົດສອບຄວາມປອດໄພແລະປະສິດທິພາບ.