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Excerpt from How Insects Affect Health in Rural Districts
The old idea that malaria is caused by breathing the miasma of swamps has been exploded. Malaria is contracted only through the bites of mosquitoes of the genus Anopheles. The cause of human malaria is the growth and development within the red blood cells of a very minute parasitic organism belonging to the lowest group of the animal kingdom - the group Protozoa, or one-celled animals, which includes those minute creatures known as Amaebas and others, and which live in the water or in damp sands or moss, or inside the bodies of other animals as parasites. This parasite reproduces in the body by subdividing, eventually bursting the red blood cells and entering the blood serum as a' mass of spores. Broadly speaking, when the blood of a human being is sucked into the stomach of a mosquito of the genus Anopheles the malarial parasite undergoes a sexual devel opment and gives birth to a large number of minute, spindle-shaped cells, known as blasts, which enter the salivary glands of the insect and are ejected with the poison into the system of the next person bitten by the mosquito. If this person happens to be nonmalarious the malaria has thus entered his system and malaria] symptoms result.
So far as present knowledge goes this is the only way in which people become malarious. In order to avoid this result it is necessary to avoid the bites of malarial mosquitoes, and it therefore becomes important to know the differences between the malaria] and the more harmless mosquitoes, and the conditions under which the malarial forms breed.
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How Insects Affect Health in Rural Districts (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. This book, written by an authoritative entomologist, explores how insects impact rural health, with a particular focus on two preventable yet prevalent countryside diseases: malaria and typhoid fever. In the early 1900s, the author's groundbreaking research discovered that the common housefly plays a pivotal role in the spread of typhoid, while certain mosquito species transmit malaria. The book delves into the life cycles and breeding habits of these disease-carrying insects, empowering readers with the knowledge needed to implement effective prevention measures. By eliminating mosquito breeding grounds and practicing proper sanitation to control houseflies, rural communities can significantly reduce the incidence of malaria and typhoid fever. The author's insights have had a profound impact on public health, leading to improved sanitation practices, widespread screening of homes, and targeted insect control programs. This book remains a valuable resource for anyone seeking to understand the relationship between insects and disease, and its findings continue to inform modern-day efforts to protect rural populations from preventable illnesses. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9780282991616_0
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How Insects Affect Health in Rural Districts (Classic Reprint)
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How Insects Affect Health in Rural Districts (Classic Reprint)
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780282991616
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