Sent_en: 2zh The finding supports the researchers' theory that reduced exposure to common infections in the first year of life increases the risk of developing acute lymphoblastic leukaemia (ALL).
Sent_yy: 这一发现支持了研究人员的理论，即在生命的第一年减少对常见感染的接触会增加患急性淋巴母细胞白血病（ALL）的风险。