Children of estate tenants and workers show high levels of malnutrition. UNICEF's MIS study, in 1995, showed that estate children had slightly higher levels of stunting than average, and almost 50 percent higher rates of wasting. Estates are quite geographically concentrated, particularly in the Central region. Almost 40 percent of the total are located in Kasungu, Mchinji and Lilongwe. In fact nearly half the population of Kasungu is made up of tenant households, which is undoubtedly a factor in Kasungu having the highest malnutrition rates in the country, in spite of having a low vulnerability index in the FEWS indicators.9 The data available on income are less reliable for the estate sector than for smallholders. However the figures reported indicate that income levels in the two sectors may be similar. Whereas some tenant farmers may do very well, others have difficulty making enough income to feed their families. These are most likely to work on small estates. Where tenants have access to land for subsistence farming this provides an important additional source of income. What data exist indicate that this is more likely to occur on larger estates, and therefore is unlikely to benefit poorer estate tenants. The situation for poor tenants may have improved somewhat with the introduction of the intermediate buyer system, which has provided competition for the estates as tobacco outlets. This could force estates to offer better terms to their tenants. The high levels of child malnutrition are a concern. These may result from poor environmental conditions and lack of health services, combined with low household income. High labour demands on tenant spouses may also affect childcare practices. 1.3 The Urban Poor Major cities in Malawi have the lowest prevalence of poverty, and an urban household is half as likely as a rural household to be poor. The main exception to this is Lilongwe, where there is twice the level of households below the 20th percentile as in any other Malawian city. The main information on urban poverty comes from work done by the Centre for Social Research in Zomba in the late 1980s and early 1990s. The urban population was estimated at 11 percent of the total in the 1987 census. Most work on poverty estimation has put the size of the urban population at about 9 percent, but UNDP estimates that by 1993 urban population growth rates were such that the urban population comprised 15 percent of the total. 9 FEWS have developed a composite vulnerability index, for use in targeting social programs. However, since the estate sector has been largely excluded from monitoring systems up until now, because of lack of an appropriate data collection structure, in areas like Kasungu where estates are important, the information included in the vulnerability index is inevitably very partial. C6