为了预防疾病，增进健康，必须了解传染病和免疫的基础知识。
To prevent disease and keep healthy, we must know the basic knowledge on the infectious diseases and immunization .
众所周知，绿茶可以治愈和预防诸如癌症，心脏病，风湿性关节炎，传染病，免疫系统损伤，心血管疾病。
Green tea is known to heal and prevent diseases like cancer, heart disease, rheumatoid arthritis, infections, impaired immune functions, and cardiovascular diseases.
在多数国家，全球消灭工作通过建立有效的监测和免疫系统拓展了能力，从而能对付其它传染病。
In most countries, the global effort has expanded capacities to tackle other infectious diseases by building effective surveillance and immunization systems.
英国一项调查显示，年老的人患皮肤癌和传染病的几率更高，因为他们的皮肤不能有效地调动免疫系统以自卫。
Older people are more at risk of skin cancer and infection because their skin is unable to mobilise the immune system to defend itself, UK research suggests.
讨论了带有脉冲免疫和传染年龄的传染病模型。
We discuss the epidemic models with impulsive vaccination and age of infection.
艾滋病是一种能够破坏人体免疫系统的疾病，使人对传染病和疾病失去防御能力。
AIDS is a disease that breaks down the body's immune system and leaves a person defenseless against infection and illnesses.
“从免疫学上看，这样的行为象季节性流感，并且我们对此很满意，”美国国家过敏症和传染病协会的主任安东尼福奇博士说。“
"Immunologically this is acting like seasonal flu and we are very pleased with that, " said Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.
传染病致病性和致死率的不断增加是HIV感染的最关键特点，因此免疫接种非常有益于HIV感染者的保护。
The increased morbidity and mortality of infectious diseases are key features of HIV infection; vaccination and immunoprophylaxis can make an important contribution to their prevention.
传染病的特点是有病原体，有传染性和流行性，感染后常有免疫性。
Infectious disease's characteristic has the pathogen, has the infection and the epidemic, after the infection, common immunity.
传染病的特点是有病原体，有传染性和流行性，感染后常有免疫性。
Infectious disease's characteristic has the pathogen, has the infection and the epidemic, after the infection, common immunity.
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