部分移民在抵达澳大利亚多年后才出现花粉症症状，这一现象与接触新的环境过敏原密切相关。1澳大利亚四分之一的人口患有花粉症。1医学专家指出，花粉症可在生命的任何阶段发病，遗传、免疫系统发育和感染等因素可能影响过敏症的发展。1
来自不同地区的移民群体尤其容易罹患此类疾病。一项1996年的研究发现，从东南亚移居澳洲的人中高达60%在10年内患上花粉症，15%患上哮喘。12015年科廷大学的研究表明，从中国移居澳洲的人群在移居后更容易患过敏症。12016年11月，墨尔本经历全球最大规模雷暴哮喘疫情，数千人呼吸困难，其中6名死亡者为南亚或东南亚人。1
面对这一健康挑战，患者有多种治疗选择。医生建议若出现呼吸急促、胸部沉重感应立即就医。1花粉症治疗可选用抗组胺药、皮质类固醇鼻喷剂或过敏原免疫疗法。1
Many people who relocate to Australia find themselves developing hay fever symptoms years into their stay, a phenomenon linked to exposure to unfamiliar environmental allergens.1 According to the Australian Institute of Health and Welfare, approximately one-quarter of Australia's population suffers from hay fever.1 Medical experts confirm that hay fever can develop at any stage of life, with genetics, immune system development, and infections all potentially influencing the onset of allergic conditions.1
Research has documented this pattern among specific migrant populations. A 1996 study found that 60 percent of people who relocated from Southeast Asia to Australia developed hay fever within ten years, while 15 percent developed asthma.1 More recently, a 2015 Curtin University study demonstrated that individuals who migrated from China to Australia experienced increased susceptibility to allergies following their relocation.1 The consequences of such allergic conditions became starkly apparent in November 2016, when Melbourne experienced the world's largest thunderstorm asthma outbreak, leaving thousands struggling to breathe; six of the deaths occurred among people of South Asian or Southeast Asian descent.1
For those experiencing symptoms, medical professionals recommend seeking immediate care if breathing becomes difficult or chest heaviness develops.1 Treatment options include antihistamines, corticosteroid nasal sprays, or allergen immunotherapy.1
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