Infectious illnesses are usually simpler to deal with than chronic ones, requiring inoculation campaigns rather than long-term care, changes of lifestyle and the uphill work of public education.

• 一般而言，传染病比慢性病较容易对付：控制传染病只需要疫苗接种工作，而不是长期保养、改变生活习惯和公共教育的费力工作。