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H1N1 flu is also called Swine flu. Its called Swine Flu because in the past people who cught had direct contact with pigs. That changed several years ago when a new virus emerged that spread among people who were not near pigs. In 2009 swine flu was spreading fast around the world, so WHO called it a pandemic. Since then people have continued to fall sick with Swine Flu but not as many. Swine flu is just like any other flu but can cause serious health problems.
It refers to physical, chemical and biological characteristics of air in the indoor environment within a home, building. In the developing countries, it is the rural areas that face the greatest threat from indoor pollution. In the urban areas, exposure to indoor air pollution has increased due to a variety of reasons, including the construction of more tightly sealed buildings, reduced ventilation, the use of synthetic materials for building and furnishing, pesticides and household care products.
October 21, 2023
