CHW Definitions

Categories of CHWs

Terms of Service, Training, Recruitment Functions
Auxiliary Health Workers Salaried and full-time; pre-service training lasting one or more years (in a specialized training institution); not necessarily recruited from the area. May be hired through some unit of local government or through national civil service structure.  These workers often provide routine clinical preventive services (e.g., immunizations, FP), as well as case management, for a limited range of conditions (e.g., childhood illness). These functions may be provided from a very peripheral health unit (e.g., a health post) or, at least in part, from outreach sites. 
Health Extension Workers (HEWs)  Salaried and expected to work more or less full-time; initial training generally at least several months (usually provided after recruitment); in some cases, this can be for up to a year. Usually recruited from the area, but may or may not originate in the community where they are serving.  This is the highest level of cadre that is commonly referred to as a CHW, though they may also be considered a type of AHW. Their functions may be very similar to those described above for AHWs. 
Community Health Volunteers-Regular (CHVs-R)  Volunteer with certain regular duties (usually with at least some activity every week); possibly with regular episodes of short training (up to several days at a time) and may have some initial training lasting several weeks. They are from and live within their local communities.  May be involved in case management of childhood illness and in dispensing (e.g., birth control pills, condoms, and antenatal iron). In rare cases, may give injectable contraceptives, such as Depo-Provera or other injections. In some programs, duties and terms of service of CHVs-R start to approach those of HEWs (see above), with significant t part-time involvement (e.g., 10–20 hours/week) and financial incentives representing an important source of revenue. These may be performance- or commission-based. In other programs, though these CHVs perform regular functions, they normally put in less time (e.g., 5 hours/week or less) and financial incentives may be minimal or not used at all. 
Community Health Volunteers-Intermittent (CHVs-I) Volunteer, relatively light, intermittent commitment; minimal orientation/training; may be numerous; local.  Typically have functions limited to health promotion, though they may also support periodic campaign activities (e.g., distribution of insecticide-treated bed nets, ivermectin, or vitamin A) and support for immunization campaigns.