Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite
| Main Author: | |
|---|---|
| Publication Date: | 1948 |
| Other Authors: | |
| Format: | Article |
| Language: | por |
| Source: | Repositório Institucional da FIOCRUZ (ARCA) |
| DOI: | 10.1590/S0074-02761948000100009 |
| Download full: | https://arca.fiocruz.br/handle/icict/52468 |
Summary: | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil. |
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Magalhães, Octavio deRocha, Adyr2022-04-29T19:07:45Z2022-04-29T19:07:45Z1948MAGALHÃES, Octavio de; ROCHA, Adyr. Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite. Memórias do Instituto Oswaldo Cruz, v. 46, n. 1, p. 15, 1948.0074-0206https://arca.fiocruz.br/handle/icict/5246810.1590/S0074-027619480001000091678-8060porFiocruz/IOCTifo exantematico neotrópicoSubsídioConhecimentoVírus do leiteSubsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leiteinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleFundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil.In articles, already published, we have proved that the strain V. B. of Brazilian virus, goes through the placenta (Macacus rhesus) (1) and the apparently normal gastro-intestinal tube (1934-1937) (Canis familiaris) (2). Today we present the idea that the Brazilian virus can reach the milk of an animal even when the latter has only the unapparent disease. In former articles (**), we have shown that the goat (Capra hircus) can be an excellent reservoir of Brazilian virus, having the strain V. B. in its blood and presenting a Weil Felix reaction high and in "group", with the disease unapparent. When the goats are bred in the laboratory, and even in some foci of the disease, they give a negative Weil Felix, being zero for all the nine strains of Proteus. In the interior of Brazil, in many localities, goats substitute cows, in supplying milk for children and adults, and in some districts goat's milk is considered superior to cow's milk, possessing marvellous qualities for men, women an children. Having proved, now, that goat's milk can contain the virus even when the animal presents nothing clinically, and having also shown that this virus goes through the digestive tube apparently sound, it is easy to understand how infants-in-arms, that is, only a few months old, living in strictly domestic surroundings, can contract the disease; we have many such cases on record. Protocol of the experiments: Goat nº 2, white, January 1948. This animal had been inoculated with the V. B. strain of the Brazilian virus in June 1947, via intra-peritoneal, presenting nothing then, not even a feverish reaction. On that occasion it was not possible to isolate the virus of the blood, although the Weil Felix reaction was positive, high and in "group". Now January 17, 1948, seven months later, the same animal was reinoculated with a semple of virus V. B. in the same manner (intra-peritoneal) two days after bringing forth two sturdy kids. The virus V. B. was obtained from guinea-pig n. 7170 whose thermic graph was as follows: Temperatura – 38,8 – 39,1 – 39,5 – 39,4 –39,8 – 40,4 – 40,2 – 40,1 - + Necropsy – Typical lesions. The spleen weighed 5 grammes. With 3c.c. of emulsion from the nervous system of this guinea-pig, we inoculated not only the goat, as also two guineapigs, number 14 and number 5. The following is the thermic graph of one: - Guinea-pig n. 14 – 38,9 – 39,1 – 39,2 – 39.2 – 40,7 – 41,0 – 40,5 – 40,4 – 40,1 - + Typical lesions. Guinea-pig n. 2 presented the following thermic graph after the infective inoculation: - 39,5 – 39,7 – 39,7 – 39,7 – 39,5 – 39,3 – 39,5 – 39,5 – 39,5 – etc. Clinically, this animal presented nothing unusual, feeding well and suckling the kids normally. The Weil Felix reaction was positive, in "group" high very similar to the reaction obtained in June 1947, with the first infective inoculation. On the third, fourth, fifth, sixth and seventh day after the infective inoculation, we took milk from the goat and inoculated male guinea-pigs via intra-celular and via intra-peritoneal, giving 5 c.c. to each animal. Guinea-pig n. 4663, inoculated with 5 c.c. of milk, via intra-muscular, taken on the third day of the infectaive inoculation, presented the following thermic graph: - 38.8 (*) – 39,1 – 39,0 – 39,1 – 40,1 – 40,1 – 40,8 (**) – 40,8 – Killed – Typical deisions (***). The virus V. B. of this goat, circulated naturally in the blood up to the third day, having passed into the milk, producing nothing in the kids, on account of the natural resistance of these animals to the disease. The Weil Felix reaction and that of Widal for the Burcellas suis, abortus and militensis were negative for the goat and the kids. It is remarkable that, even with inoculation of the living virus after a period of seven months we cannot get a real and absolute immunity of sensitive animals. We shall return to this subject later. The hart Mazama simplicicornis may be a carrier of the virus in Brasil. 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| dc.title.none.fl_str_mv |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| title |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| spellingShingle |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite Magalhães, Octavio de Tifo exantematico neotrópico Subsídio Conhecimento Vírus do leite |
| title_short |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| title_full |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| title_fullStr |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| title_full_unstemmed |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| title_sort |
Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite |
| author |
Magalhães, Octavio de |
| author_facet |
Magalhães, Octavio de Rocha, Adyr |
| author_role |
author |
| author2 |
Rocha, Adyr |
| author2_role |
author |
| dc.contributor.author.fl_str_mv |
Magalhães, Octavio de Rocha, Adyr |
| dc.subject.other.none.fl_str_mv |
Tifo exantematico neotrópico Subsídio Conhecimento Vírus do leite |
| topic |
Tifo exantematico neotrópico Subsídio Conhecimento Vírus do leite |
| description |
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil. |
| publishDate |
1948 |
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1948 |
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2022-04-29T19:07:45Z |
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2022-04-29T19:07:45Z |
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MAGALHÃES, Octavio de; ROCHA, Adyr. Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite. Memórias do Instituto Oswaldo Cruz, v. 46, n. 1, p. 15, 1948. |
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https://arca.fiocruz.br/handle/icict/52468 |
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0074-0206 |
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10.1590/S0074-02761948000100009 |
| dc.identifier.eissn.none.fl_str_mv |
1678-8060 |
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MAGALHÃES, Octavio de; ROCHA, Adyr. Subsídio ao melhor conhecimento do tifo exantemático neotrópico no Brasil: presença do virus no leite. Memórias do Instituto Oswaldo Cruz, v. 46, n. 1, p. 15, 1948. 0074-0206 10.1590/S0074-02761948000100009 1678-8060 |
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Fiocruz/IOC |
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