Methods to evaluate nutritional and economic implications of ascaris infection

Contributions of ascariasis to poor nutritional status in children from Chiriqui Province, Republic of Panama

“…A shorter mouth-to-caecum transit time could also help to explain the observed lower protein and lower fat absorption in pigs and people experiencing ascariasis (Stephenson, 1978;Stephenson, Pond, Nesheim, Krook & Crompton, 19806;Brown et al 1980;Forsum et al 1981). The possibility that the hypertrophy of the tunica muscularis in pigs infected with A. suum (Stephenson et al 19806) is linked to intestinal transit time needs to be investigated.…”

“…Unequivocal results from experimental studies of ascariasis in pigs have shown that the intestinal stages of Ascaris suum induce decreases in food intake and rate of body weight gain (Forsum, Nesheim & Crompton, 1981). Work with human subjects, however, cannot be truly experimental and confidence in the results depends largely on the type of study design, the number of people participating and the power of the statistical analysis to control for confounding variables (Stephenson, 1984). Nevertheless, results from studies in several countries have indicated that, in children, ascariasis contributes to reduced growth rate (Gupta, Mithal, Arara & Tandon, 1977;Willett, Kilama & Kihamia, 1979;Stephenson, Crompton, Latham, Schulpen, Nesheim & Jansen, 1980a;Cerf, Rohde & Soesanto, 1981) and varying forms of digestive disturbance and malabsorption (Tripathy, Duque, Bolanos, Lotero & Mayoral, 1972;Sivakumar & Reddy, 1975;Mahalanabis, Jalan, Maitra & Agarwal, 1976;Brown,…”

Contributions of ascariasis to poor nutritional status in children from Chiriqui Province, Republic of Panama

“…A shorter mouth-to-caecum transit time could also help to explain the observed lower protein and lower fat absorption in pigs and people experiencing ascariasis (Stephenson, 1978;Stephenson, Pond, Nesheim, Krook & Crompton, 19806;Brown et al 1980;Forsum et al 1981). The possibility that the hypertrophy of the tunica muscularis in pigs infected with A. suum (Stephenson et al 19806) is linked to intestinal transit time needs to be investigated.…”

“…Unequivocal results from experimental studies of ascariasis in pigs have shown that the intestinal stages of Ascaris suum induce decreases in food intake and rate of body weight gain (Forsum, Nesheim & Crompton, 1981). Work with human subjects, however, cannot be truly experimental and confidence in the results depends largely on the type of study design, the number of people participating and the power of the statistical analysis to control for confounding variables (Stephenson, 1984). Nevertheless, results from studies in several countries have indicated that, in children, ascariasis contributes to reduced growth rate (Gupta, Mithal, Arara & Tandon, 1977;Willett, Kilama & Kihamia, 1979;Stephenson, Crompton, Latham, Schulpen, Nesheim & Jansen, 1980a;Cerf, Rohde & Soesanto, 1981) and varying forms of digestive disturbance and malabsorption (Tripathy, Duque, Bolanos, Lotero & Mayoral, 1972;Sivakumar & Reddy, 1975;Mahalanabis, Jalan, Maitra & Agarwal, 1976;Brown,…”

The problem and control of gastrointestinal helminthiases in Zimbabwe

“…For example in Kenya, it was shown that Ascaris lumbricoides infection may result in negative growth rates in undernourished children (44). Other studies in that country suggested that poor nutritional status and anaemia, probably due to hookworm infection, were significantly associated with low work productivity (3, 14).…”

Prevalence of intestinal parasitic infections in certified food-handlers working in food establishments in the City of Nairobi, Kenya

“…The parasites primarily infest the small intestines and colon in man and other animals[1]. The morbidity associated with these is strongly related to the parasite burden[2],[3]. Parasitic diseases thus contribute to inequalities that exist both within and between societies[4].…”

Contributions of ascariasis to poor nutritional status in children from Chiriqui Province, Republic of Panama

“…A shorter mouth-to-caecum transit time could also help to explain the observed lower protein and lower fat absorption in pigs and people experiencing ascariasis (Stephenson, 1978;Stephenson, Pond, Nesheim, Krook & Crompton, 19806;Brown et al 1980;Forsum et al 1981). The possibility that the hypertrophy of the tunica muscularis in pigs infected with A. suum (Stephenson et al 19806) is linked to intestinal transit time needs to be investigated.…”

“…Unequivocal results from experimental studies of ascariasis in pigs have shown that the intestinal stages of Ascaris suum induce decreases in food intake and rate of body weight gain (Forsum, Nesheim & Crompton, 1981). Work with human subjects, however, cannot be truly experimental and confidence in the results depends largely on the type of study design, the number of people participating and the power of the statistical analysis to control for confounding variables (Stephenson, 1984). Nevertheless, results from studies in several countries have indicated that, in children, ascariasis contributes to reduced growth rate (Gupta, Mithal, Arara & Tandon, 1977;Willett, Kilama & Kihamia, 1979;Stephenson, Crompton, Latham, Schulpen, Nesheim & Jansen, 1980a;Cerf, Rohde & Soesanto, 1981) and varying forms of digestive disturbance and malabsorption (Tripathy, Duque, Bolanos, Lotero & Mayoral, 1972;Sivakumar & Reddy, 1975;Mahalanabis, Jalan, Maitra & Agarwal, 1976;Brown,…”

The problem and control of gastrointestinal helminthiases in Zimbabwe

“…For example in Kenya, it was shown that Ascaris lumbricoides infection may result in negative growth rates in undernourished children (44). Other studies in that country suggested that poor nutritional status and anaemia, probably due to hookworm infection, were significantly associated with low work productivity (3, 14).…”

Prevalence of intestinal parasitic infections in certified food-handlers working in food establishments in the City of Nairobi, Kenya

“…The parasites primarily infest the small intestines and colon in man and other animals[1]. The morbidity associated with these is strongly related to the parasite burden[2],[3]. Parasitic diseases thus contribute to inequalities that exist both within and between societies[4].…”

Contributions of ascariasis to poor nutritional status in children from Chiriqui Province, Republic of Panama

“…A shorter mouth-to-caecum transit time could also help to explain the observed lower protein and lower fat absorption in pigs and people experiencing ascariasis (Stephenson, 1978;Stephenson, Pond, Nesheim, Krook & Crompton, 19806;Brown et al 1980;Forsum et al 1981). The possibility that the hypertrophy of the tunica muscularis in pigs infected with A. suum (Stephenson et al 19806) is linked to intestinal transit time needs to be investigated.…”

“…Unequivocal results from experimental studies of ascariasis in pigs have shown that the intestinal stages of Ascaris suum induce decreases in food intake and rate of body weight gain (Forsum, Nesheim & Crompton, 1981). Work with human subjects, however, cannot be truly experimental and confidence in the results depends largely on the type of study design, the number of people participating and the power of the statistical analysis to control for confounding variables (Stephenson, 1984). Nevertheless, results from studies in several countries have indicated that, in children, ascariasis contributes to reduced growth rate (Gupta, Mithal, Arara & Tandon, 1977;Willett, Kilama & Kihamia, 1979;Stephenson, Crompton, Latham, Schulpen, Nesheim & Jansen, 1980a;Cerf, Rohde & Soesanto, 1981) and varying forms of digestive disturbance and malabsorption (Tripathy, Duque, Bolanos, Lotero & Mayoral, 1972;Sivakumar & Reddy, 1975;Mahalanabis, Jalan, Maitra & Agarwal, 1976;Brown,…”

The problem and control of gastrointestinal helminthiases in Zimbabwe

“…For example in Kenya, it was shown that Ascaris lumbricoides infection may result in negative growth rates in undernourished children (44). Other studies in that country suggested that poor nutritional status and anaemia, probably due to hookworm infection, were significantly associated with low work productivity (3, 14).…”

Prevalence of intestinal parasitic infections in certified food-handlers working in food establishments in the City of Nairobi, Kenya

“…The parasites primarily infest the small intestines and colon in man and other animals[1]. The morbidity associated with these is strongly related to the parasite burden[2],[3]. Parasitic diseases thus contribute to inequalities that exist both within and between societies[4].…”