Chapter 1: Undertake rapid nutrition assessment

Undertaking rapid nutrition assessment in emergencies is a critical skill for Nutrition and Dietetics professionals working in Kenya. Emergencies often disrupt food systems, health services, and livelihoods, exposing vulnerable populations to acute malnutrition and related health risks. Rapid nutrition assessments provide timely, actionable information to guide immediate interventions and resource allocation. This chapter equips learners with foundational concepts and terminology essential for effective nutrition assessment amid crises.

1.1 Basic nutrition emergency concepts

A nutrition emergency is a situation in which the nutritional status of a population is, or is about to be, seriously harmed by a sudden or prolonged crisis. Droughts, floods, disease outbreaks, conflict and displacement all affect Kenyan communities in this way. A dietitian or nutritionist who joins an emergency team must use the language of the response correctly, because assessment results, funding requests and reports are written in it. This topic gives the terms, then the types and effects of disasters, and ends with the groups of people who suffer first.

1.1.1 Definition of terms

Terms such as emergency, disaster and complex emergency are often used as if they meant the same thing, but each describes a different scale and cause of crisis. Clear definitions let the team agree when a situation has become an emergency, who should respond and which kind of help is needed. The terms below are defined in turn. In summary, an emergency calls for urgent action, a disaster is an emergency that overwhelms the community's own ability to cope, and a complex emergency is a prolonged crisis with several causes at once. Rapid assessment is the tool used to measure the nutritional effect of any of them.

1.1.2 Rapid assessment

A rapid assessment is a quick, focused collection of the key nutrition and health information in the early phase of an emergency. It trades some precision for speed, so that decisions on whether to respond, where, and with what, are made in days and not months.

Purpose of rapid assessment

It gives a first picture of the nutritional state and food security of the affected people, shows which areas and groups are worst affected, and provides the evidence needed to mobilise resources. For example, if a rapid assessment of a drought-affected area finds many children with low mid-upper arm circumference, the team can justify starting supplementary feeding at once.

Components of rapid assessment

• Nutritional status: measurements of children, such as mid-upper arm circumference and weight-for-height, to find acute malnutrition.
• Illness: the diseases present, since infections such as diarrhoea and measles worsen malnutrition.
• Food security: food supplies, access to markets, and how households are coping.
• Mortality: the number of deaths in a stated period, which shows how severe the situation is.
• Services and capacity: health facilities, feeding programmes, water and staff available.

Methods and tools

Cluster sampling selects groups of households, such as villages, at random to represent a large area quickly, while purposive sampling selects the worst-affected places on purpose. Key informant interviews with community leaders and health workers add information about causes and coping. Short household questionnaires, such as the Household Food Insecurity Access Scale, measure food access, and electronic forms on phones or tablets speed up collection and analysis.

Limits of rapid assessment

Insecurity, flooded roads and moving populations limit access and can bias the findings. Hurried collection and untrained staff reduce quality. Rapid results are therefore treated as a basis for early action and are checked by more detailed assessments when conditions allow.

1.1.3 Emergency

An emergency is a sudden or developing situation that threatens the health, safety or welfare of a population and needs urgent action. What defines it is the need for a quick response, not its size.

Types of emergency affecting nutrition

• Natural hazards: drought and floods that damage crops, livestock and food stores.
• Disease outbreaks: cholera or measles outbreaks that raise illness and malnutrition together.
• Conflict and insecurity: fighting or inter-community violence that closes markets and forces people to move.

Effect on nutritional status

Food intake falls, illness rises and the care of young children weakens, so acute malnutrition and micronutrient deficiency increase. A household cut off from its market by floods may reduce meals from three to one a day.

Role of the nutrition professional

The nutrition professional assesses needs, designs feeding and counselling activities within the scope of practice, works with health, water and food security teams, and monitors results. Activities are made culturally acceptable by involving community members.

1.1.4 Disaster

A disaster is a serious disruption of the functioning of a community, involving widespread human, material, economic or environmental losses that exceed the community's ability to cope with its own resources. A hazard, such as a flood, becomes a disaster when people are exposed and unprepared.

Characteristics of disasters affecting nutrition

Disasters destroy homes, crops and stored food, interrupt health services and move people away from their usual food sources. These changes reduce food access and care at the same time, and the effects on nutrition can continue long after the event.

Nutritional consequences

Wasting and micronutrient deficiencies increase, and children are more likely to fall ill. Stress and separation of mothers from infants can disrupt breastfeeding.

Disaster preparedness

Preparedness measures reduce the harm before a disaster happens: keeping stocks of therapeutic and supplementary foods, training rapid response teams in assessment, mapping the areas that flood or suffer drought, and writing contingency plans with other sectors.

1.1.5 Nutrition in emergency

Nutrition in emergency means the actions taken to protect and improve the nutritional status of people affected by a crisis. Its goal is to reduce illness and death caused by malnutrition and to protect nutrition security until normal life returns.

Goals of nutrition in emergency

• Save lives: treat severe malnutrition and prevent deaths.
• Protect the nutritional status of groups at risk: reach children, pregnant and lactating women and others before they deteriorate.
• Support appropriate feeding: protect and promote breastfeeding and safe complementary feeding.
• Support recovery: help people return to normal nutrition and food security.

Main activities

Activities include screening to find malnourished people, treatment of acute malnutrition, supplementary feeding, micronutrient supplementation, general food distribution, and counselling on infant and young child feeding. These activities are explained fully in the chapters on planning and implementing emergency nutrition intervention.

Challenges

Insecurity, poor roads, shortage of trained staff and cultural barriers all delay services. The movement of pastoral families with their herds makes regular follow-up of the same children difficult.

1.1.6 Complex emergency

A complex emergency is a prolonged crisis in which conflict, displacement, food insecurity and a breakdown of government and services occur together. It differs from a single-cause emergency because removing one cause does not end the crisis.

Features and nutrition implications

Prolonged conflict, mass displacement and restricted humanitarian access make it difficult to deliver aid. Food shortage, damaged health systems and psychological stress produce both acute and chronic malnutrition, and the collapse of community support removes the usual coping methods.

Response needs

A response must involve health, protection, food security, water and sanitation and shelter sectors working together, and often requires negotiation of safe access. The nutrition professional adapts assessment methods to insecure conditions and supports programmes that address both immediate needs and the underlying causes.

1.1.6.1 Types of disasters

Disasters are grouped by their cause into natural disasters and man-made disasters. Some are sudden, such as flash floods and fires, while others develop slowly, such as drought. Grouping them helps in preparing for those that are likely in a given area and in predicting the nutritional effects, which differ between a sudden shock and a slow decline in food supply.

1.1.6.2 Natural disasters

Natural disasters result from natural hazards.

• Drought: a prolonged shortage of rain that reduces crops, pasture and water, and is a recurring threat in arid and semi-arid areas.
• Floods: destroy crops and food stores, contaminate water and spread waterborne disease.
• Landslides: bury homes and cut roads in steep, wet areas.
• Disease epidemics: such as cholera, treated as natural when caused by an infectious agent spreading in the population.
• Pests: swarms of locusts that destroy crops and pasture over large areas.

1.1.6.3 Man-made disasters

Man-made disasters result from human action or failure.

• Conflict and civil unrest: displace people, close markets and block aid.
• Industrial accidents and fires: release toxic substances or destroy housing and food stores.
• Food and water contamination: such as a chemical spill into a water source.
• Economic or political collapse: sudden loss of income and food access, for example by a sharp rise in food prices.
• Mass displacement and refugee influx: overcrowded camps with poor water and sanitation.

1.1.6.4 Impact of disasters

Disasters affect nutrition at three levels, and each must be assessed because the effects at one level feed into the next.

1.1.6.4.1 Impact on population

At population level, a disaster increases deaths and illness, damages the health, water and food systems, displaces people and raises the proportion who are acutely malnourished. Surveys measure the level of malnutrition and mortality, and these figures decide the size of the response.

1.1.6.4.2 Impact on households

At household level, families lose food stocks, crops, livestock, income and often their homes. They cope by reducing the number or size of meals, eating cheaper and less varied foods, selling assets, borrowing or sending members away to find work. These coping methods may protect food for a while, but they reduce dietary quality and leave households poorer, so recovery is slow.

1.1.6.4.3 Impact on individual

At individual level, reduced intake and repeated infection lead to weight loss, wasting and deficiency of vitamins and minerals. Children suffer growth faltering, pregnant women may give birth to underweight babies, and people also suffer fear, grief and loss of social support that affect appetite and care.

1.1.7 Vulnerable groups in nutrition emergencies

Vulnerable groups are people who are more likely than others to suffer malnutrition and its effects during an emergency. Identifying them early allows assessment, screening and feeding to be directed to those at greatest risk, and it ensures that scarce food and staff reach the people who gain most from them. Vulnerability arises from the body, from the place and from power and politics, and a person may be vulnerable for more than one reason.

1.1.7.1 Physiological vulnerability

This arises from the body's changed needs or reduced ability to cope.

• Children under five years: they have high needs for growth, immature immune systems and depend on others for feeding, so acute malnutrition raises their risk of death.
• Pregnant and lactating women: they need extra energy and nutrients for the baby and for milk, and malnutrition affects both mother and infant.
• Older people: they may have long-term illness, reduced appetite and limited mobility that limits access to food.
• People with chronic illness or disability: conditions such as HIV infection, or difficulty in chewing, swallowing or moving, can reduce intake or raise needs.

1.1.7.2 Geographical vulnerability

This arises from where people live.

• Remote and arid areas: distance from markets and health services makes help slow to arrive, and drought affects pastoral and farming communities.
• Flood-prone and landslide-prone areas: repeated loss of crops and homes.
• Camps and informal settlements: overcrowding and poor water and sanitation increase disease and worsen nutrition.
• Places cut off by damaged roads or insecurity: where aid and health workers cannot reach.

1.1.7.3 Political vulnerability

This arises from the lack of power, rights or safety of a group.

• Displaced people and refugees: often unable to farm, work or move freely, and dependent on aid.
• People living in conflict areas: unsafe access to markets, farms and health facilities.
• Marginalised groups: minorities, or women and girls where they have little say in household decisions, may be left out of assessments and aid distribution.
• Communities with restricted humanitarian access: where authorities or armed groups limit the delivery of food and health services.

Chapter Summary

This chapter provided a comprehensive overview of rapid nutrition assessment in emergency contexts, beginning with key concepts such as the definitions of emergency, disaster, and complex emergencies, alongside the importance of understanding nutrition in these situations. It discussed various types of disasters, both natural and man-made, and their profound impacts on affected populations, highlighting the physiological, geographical, and political vulnerabilities that increase risk during nutrition emergencies. The chapter emphasized the critical role of personal protective equipment including masks, gloves, and dust coats to ensure safety during assessments. Essential components of nutrition screening were covered in detail, focusing on measurements like MUAC, weight, height, BMI, waist-hip ratio, and clinical assessment to accurately evaluate nutritional status. Finally, the chapter underscored the importance of meticulous documentation of nutrition status to inform appropriate interventions and monitor progress effectively. This knowledge equips practitioners to conduct timely and accurate nutrition assessments that are vital for emergency response.