Respiratory infectious disease is common among adults, with estimated annual incidence of 5-20 per cent of all hospital admissions and deaths. However, there are no recent studies describing the causes of these diseases. The proportion of deaths due to COVID-19 is likely to be overestimated in the absence of data on respiratory infectious disease. Complete autopsies are rarely performed for these cases.

The construction industry is one of the most important sectors of the Kenyan economy. The sector develops buildings for living, recreation and work. During the construction of building, materials are key input component and their cost have continued increasing.

A research team led by Dr.