Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0043167 (pertussis)
 19,595 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

For major diseases for which control measures are inadequate, research is an inexpensive approach on the basis of cost per infected person per year. Priorities among the infectious diseases affecting the 3 billion people in the less developed world have been based on prevalence, morbidity, mortality and feasibility of control. With these priorities in mind, a program of selective primary health care is compared with other approaches and suggested as the most cost-effective form of medical intervention in the least developed countries. A flexible program delivered by either fixed or mobile units might include measles and diptheria-pertussis-tetanus vaccination, treatment for febrile malaria and oral rehydration for diarrhea in children, and tetanus toxoid and encouragement of breast feeding in mothers. Other interventions might be added on the basis of regional needs and new developments. Aiming services at the most important diseases is the only rational approach to absolute proverty and unsanitary conditions. The goal is to help the greatest number of people in the cost effective method possible.
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PMID:Selective primary health care: an interim strategy for disease control in developing countries. 11 30

(C57BI x Balb/c)F1 mice are normally killed by a strain of the malaria P. yoelii, but they can be fully protected by a killed vaccine. The best results were obtained with saponin-lysed parasitized cells subsequently fixed with 0-06% formalin and injected intravenously with the adjuvant B. pertussis, though good protection was also obtained without the adjuvant. The protection was specific and at least partly mediated by a serum factor. A similar regime gives little or no protection against P. berghei. Possible reasons for this difference are considered and the mechanisms by which vaccination works against P. yoelii are discussed.
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PMID:Protection of mice against malaria by a killed vaccine: differences in effectiveness against P. yoelii and P. berghei. 33 22

Various workers, including T. D. Stewart, claim that the aboriginal Americas were relatively disease-free because of the bering Strait cold-screen, eliminating many pathogens, and the paucity of zoonotic infections because of few domestic animals. Evidence of varying validity suggests that precontact Americns had their own strains of treponemic infections, bacillary and amoebic dysenteries, influenza and viral penumonia and other respiratory diseases, salmonellosis and perhaps other food poisoning, various arthritides, some endoparasites such as the ascarids, and several geographically circumscribed diseases such as the rickettsial verruca (Carrion's disease) and New World leishmaniasis and trypanosomiasis. Questionably aboriginal are tuberculosis and typhus. Accordingly, virtually all the "crowd-type" ecopathogenic diseases such as smallpox, yellow fever, typhoid, malaria, measles, pertussis, polio, etc., appear to have been absent from the New World, and were only brought in by White conquerors and their Black slaves. My hypothesis is that native American medical care systems--especially in the more culturally advanced areas--were sufficiently sophisticated to deal with native disease entities with reasonable competence. But native medical systems could not cope with the "crowd-type" disease imports that struck Indian and Eskimos as "virgin-field" populations. Reanalysis of native population losses through a genocidal combination of diease, war, slavery and attendant cultural disruption by Dobyns, Cook and others strongly suggest that traditiona estimates underplayed the death toll by a factor of the general order of ten. This would make for an immediately pre-contact Indian population of some 90-111 million instead of the tradition 8-11 million. Evidence is growing that Indians may have been no more susceptible to new pathogens that are other "virgin soil" populations, and thus their immune systems need not be considered less effective than those in other people. Present-day high mortality rates in Indians of both continents from infectious disease imports may be more socioeconomic than anything else.
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PMID:Aboriginal new world epidemiolgy and medical care, and the impact of Old World disease imports. 79 20

Plasmodium yoelii infection of mice depressed their capacity to build up humoral immune response to diphteria vaccine and protective immunity against tetanus toxin. This immunodepression was overcome by Freund's complete adjuvant or killed pertussis bacilli (whooping cough vaccine). These results suggest that vaccines should be given in association in malaria endemic area.
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PMID:Inhibition of the immune response to whooping cough and tetanus vaccines by malaria infection, and the effect of pertussis adjuvant. 86 3

In tropical countries, concomitant infections are a continuous problem. In the Rufiji Delta, an area of Tanzania that is holoendemic for malaria, there were outbreaks of influenza A, measles, and pertussis in 1986 and 1987. Significantly lower parasitic prevalences and mean densities of malaria parasites were found in children up to nine years of age who had measles or influenza than in asymptomatic control children. In contrast, children with pertussis had a higher prevalence and mean density than controls. The clinical courses of measles, influenza, or pertussis infections did not appear to be significantly affected by concomitant malaria infections. The reasons for the suppression of Plasmodium falciparum parasitemia during these viral infections are unclear. This effect could not be explained by the presence of fever.
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PMID:Suppression of Plasmodium falciparum infections during concomitant measles or influenza but not during pertussis. 144 8

The international community has launched the Children's Vaccine Initiative, which has created the most ambitious grouping of public and private sector interests ever to tackle a global health issue. Developed by WHO, UNICEF, UNDP, the World Bank, and the Rockefeller Foundation, the initiative is the result of decisions taken at the World Summit for Children, held in New York in September 1990. During that meeting, world leaders requested greater resources for the development of new or better vaccines. The Children's Vaccine Initiative, says WHO Director-General Dr. Hiroshi Nakajima, will not only yield specific benefits in improving vaccines, it will also establish a process of collaboration between the public and private sectors, which will have far-reaching benefits in other areas. The new initiative comes on the heels of another international effort, the successful Expanded Program on Immunization, which in 1990 achieved its goal of immunizing 80% of the world's children against 6 major childhood diseases: poliomyelitis, measles, tuberculosis, diphtheria, pertussis, and tetanus. The new initiative will strive to develop vaccines against a wider spectrum of viral, bacterial, and parasitic diseases which cause mortality in children. These diseases include rotavirus infection, hepatitis A and E, dengue, Japanese encephalitis, acute respiratory diseases, meningococcal meningitis, diarrheal diseases, pneumococcal pneumonia, and malaria. The new initiative will also seek to improve existing vaccines, making them easier to administer and less painful and costly.
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PMID:New children's vaccine initiative launched. 160 Apr 43

New vaccine developments will reflect achievements of the World Health Organization's (WHO) Expanded Programme on Immunization (EPI), as well as resistance from the public toward increasing numbers of vaccines. WHO's EPI program has concentrated on tuberculosis, diphtheria, tetanus, whooping cough, polio, and measles. 35 countries are attempting to control hepatitis B with universal vaccination. Now some countries are also recommending vaccination against Haemophilus influenza, mumps, and rubella. The complexity of multiple injections has prompted new research on acellular vaccines for pertussis, hepatitis A and B, varicella, and malaria. Combined vaccines and new adjuvants are also targets of intense research. Vaccines are a priority, because they are among the most cost-effective of medical interventions.
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PMID:New developments in vaccinology. 163 65

Researchers analyzed the relationship between use of primary health care services and child mortality in 16 villages in the communes of Pahou and Avlekete on the Atlantic coast of Benin. The case control study included 74 4-35 month old children who died in 1986-1987 and 230 controls who survived. Overall child mortality stood at 35.9/1000/year. Fever and convulsions, presumably malaria, were the most likely cause of the majority of deaths (38 cases). No protective effect of a village health worker (VHW) visit in the 6 months before death occurred between fever and convulsion cases and other causes of death cases, however. VHWs had visited considerably more controls than cases in the 6 months prior to death (RR ..3; p.05). Indeed the greatest protective effect occurred in children who has been seen by VHWs had visited 71% of all children for a median of 4 visits each. Poor children were only slightly more likely to die than nonpoor children. Children whose weight for age was 75% of the standard for their age has a 4.26 relative risk (RR) of mortality (p.05). Further, when the researchers excluded cases who died within 3 months of the weight measurement, the RR remained high (2.9) and the association significant (p=.08). Measles vaccination between 9-12 months old significantly protected children against mortality (RR .36; p.05). On the other hand, diphtheria, tetanus, and pertussis vaccination did not have a significant protective effect. In conclusion, personal and household contact with a VHW and measles vaccination between 9-12 months improves child survival for 4-35 month old children.
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PMID:Childhood mortality among users and non-users of primary health care in a rural west African community. 191 52

Infection with the blood stage of the malaria parasite Plasmodium vinckei is uniformly lethal in mice. We found that immunization of BALB/c mice with a combination of killed P. vinckei antigens and an attenuated (aroA) Salmonella typhimurium strain induces high levels of protection against challenge with live P. vinckei. This is especially significant because, in our previous studies, immunization of mice with killed P. vinckei antigens and adjuvants such as Bordetella pertussis, complete Freund adjuvant, and saponin failed to induce protective immunity. Immunization with attenuated S. typhimurium alone did not provide any nonspecific immunity. In vivo depletion of CD4+ T cells in the mice immunized with attenuated S. typhimurium and P. vinckei antigens caused the loss of their immunity. Expression of this immunity required the presence of a spleen. These results support our previous hypothesis that a blood stage malaria vaccine may need both induction of CD4+ T cells specific for the parasite and modification of the spleen with a vaccine vehicle. Therefore, attenuated Salmonella strains such as the one used in this study, when expressing recombinant malarial antigens, might fulfill this requirement.
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PMID:Immunization of mice against Plasmodium vinckei with a combination of attenuated Salmonella typhimurium and malarial antigen. 197 14

Researchers interviewed 194 mothers of children 1-2 years old in Port Moresby, New Guinea to determine why childhood immunizations are not completed. They also looked at the baby clinic books to see if the children received the completed doses of vaccines. 87% did not know why children should be immunized. Moreover only 13% believed immunizations could prevent disease. Further 86.6% could not list any of the diseases that immunizations target. 11.9% did correctly report measles, tuberculosis, polio, and pertussis, however. On the other hand, 3 (1.5%) mothers incorrectly believed immunizations protect against malaria, diarrhea, and malnutrition. The relationship between lack of knowledge and noncompletion of immunization was not significant, however (p=.07). 76.8% reported very rude behavior on the part of the health staff. 15.5% went so far to say that the health staff often reacted aggressively towards them. Only 7.7% reported kind of behavior. Mothers who perceived health staff attitudes as negative tended not to return to the clinic with their children for the 3rd dose (p=.002). DPT and polio vaccine coverage declined consistently from 94% (1st dose) to 79% (3rd dose). Nevertheless 3rd dose coverage was considered rather high. Since hospital delivery was almost universal in Port Moresby and hospital staff routinely administer the BCG vaccination prior to discharge, BCG coverage was high (96%), however. Emphasis in the national immunization program should be on changing health staff attitudes leading to improvements in the social interaction between patients and health staff.
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PMID:Possible reasons for non-completion of immunization in an urban settlement of Papua New Guinea. 205 99


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