Sanitation shared between a few households, where all residents know each other and maintenance and cleaning is shared, is a common form of access in many countries, particularly in sub-Saharan Africa. This form of access can contribute to the realization of the human rights to water and sanitation, where the construction and maintenance of the toilet or latrine is adequate, and where everyone within the households has access to the toilet or latrine, regardless of their age, physical ability or status within the household. There may be particular concerns for persons with disabilities, children, older persons, people with a chronic illness (which may be stigmatized, such as HIV), renters or those who do not belong to the main household. In some cultures, menstruating women are not allowed to use a latrine shared by other people, and this problem may be compounded when the latrine is shared by several households (see A/67/270, para. 73).