They would be located everywhere, with an emphasis on vulnerable regions. Initial warning signs of a pandemic are most likely to appear in the developing world, but detection nodes should be positioned in every country, with the least possible expense.
“侦探们”必须是专家，有足够的能力知道一种看似平常的症状在何时会是一种紧急情况。他们应该被安排在各处，特别是在高危地区。流行性疾病的初始警报通常会出现在发展中国家，但诊测节点应该以尽可能低的代价在各国建立。这没有听起来那么复杂。关键是要充分利用现有基础设施。