In this task, you are given one French sentence. The major part of the sentences talk about health-related topics, but some of the them describe an organization and its activities. Your job is to translate the given sentences into English.

La grippe est une maladie infectieuse aiguë des voies respiratoires due à trois formes de virus influenza :
Influenza is an acute infectious disease of the respiratory tract caused by the influenza virus which occurs in three types:

Le Centre développe actuellement un kit destiné à renforcé la surveillance et la réaction.
A toolkit for strengthening surveillance and response is being developed.

Le «Manuel d’épidémiologie de terrain» est conçu pour servir de référence et de support principal de formation dans le domaine de l’épidémiologie d’intervention.

The purpose of the “Field epidemiology manual” (FEM) is to serve as reference, core structure for training needs in intervention epidemiology.