The severity of disasters caused by natural phenomena could be largely mitigated, and the actual occurrence of disasters caused by inappropriate human activities could be prevented, if adequate measures were taken before the event. However, little attention is given to long-term policies and plans: the identification of disaster-prone areas is incomplete; public information is scarce; early-warning systems are undeveloped; training of personnel is inadequate; and new legislation and environmental measures are either insufficient or non-existent. Often the effects of a disaster on a population are far greater than need be because of ignorance, neglect, poverty, and sometimes corruption and deceit.
Developing countries are especially vulnerable to disasters because they are generally not at all equipped to handle the resulting problems, nor do they have the resources to devote to prevention.