Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Botulism”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 397 records · Page 22Linked to original sources

Infant botulism.

Infant botulism is a unique neuromuscular disease affecting infants less than six months old. It is the result of intraintestinal toxin production by C. botulinum (toxi-infection). Characteristic symptoms include constipation, lethargy, and decreased feeding. Physical examination often reveals generalized hypotonia with cranial nerve impairment. Recovery is dependent on supportive care in an intensive care setting. The relationship of this disease to the sudden infant death syndrome requires further study.

Botulinum Antitoxin↗

Infant botulism. Identification of Clostridium botulinum and its toxins in faeces.

Clostridium botulinum and its toxin were identified in the faeces of four infants, aged 6 to 13 weeks, who had symptoms consistent with botulism. Two cases had type-A toxin and two cases had type-B toxin present in their faeces. No toxin was detectable in sera C. botulinum and toxin could be recovered from faeces more than 8 weeks after admission to hospital. All four cases occurred within a 6-month period. The source of the toxin in these infants may have been in-vivo production from ingested organisms.

Botulinum Toxins↗

Infant botulism in England.

A 24-week-old girl presented with an acute illness characterised by constipation at 22 weeks, followed a week later by the sudden onset of generalised weakness, poor feeding, and a weak cry. Laboratory examination of her stools confirmed the clinical diagnosis of infant botulism.

Acute Disease↗

Ribotyping as an identification tool for Clostridium botulinum strains causing human botulism.

Ribotyping was used for characterisation of 68 Clostridium botulinum strains and five related Clostridium species to determine the applicability of this method for identification of species causing human botulism. Thirteen restriction enzymes were initially tested for suitability for ribotyping of C. botulinum, of which EcoRI and HindIII were selected. Both enzymes clearly differentiated between proteolytic (group I) and a nonproteolytic (group II) strains of C. botulinum, and can be recommended for Group/species identification. Using a commercial software package (GelCompar), a numerical analysis of the discriminatory abilities of EcoRI and HindIII ribotyping within and between the two C. botulinum groups was performed. EcoRI had the higher discriminatory index (0.982), but the ribopatterns generated with group II strains were partly muddled and difficult to interpret. All HindIII ribopatterns were easy to analyse and the discriminatory index for all strains was almost equally high (0.954), whereas this enzyme did not discriminate well between group I isolates. The Clostridium strains diverged at 35+/-13% (mean+/-standard deviation) Dice similarity in dendrograms based on cluster analysis of the ribotyping results. These findings are in good agreement with taxonomical ribotyping studies with other bacterial genera, indicating that ribotyping is a highly suitable method for C. botulinum species identification.

Blotting, Southern↗

An outbreak of foodborne botulism associated with contaminated hazelnut yoghurt.

The largest recorded outbreak of foodborne botulism in the United Kingdom occurred in June 1989. A total of 27 patients was affected; one patient died. Twenty-five of the patients had eaten one brand of hazelnut yoghurt in the week before the onset of symptoms. This yoghurt contained hazelnut conserve sweetened with aspartame rather than sugar. Clostridium botulinum type B toxin was detected in a blown can of hazelnut conserve, opened and unopened cartons of hazelnut yoghurt, and one faecal specimen. Cl. botulinum type B was subsequently cultured from both opened and unopened cartons of the hazelnut yoghurt and from one faecal specimen. Investigations indicated that the processing of the conserve was inadequate to destroy Cl. botulinum spores. Control measures included the cessation of all yoghurt production by the implicated producer, the withdrawal of the firm's yoghurts from sale, the recall of cans of the hazelnut conserve, and advice to the general public to avoid the consumption of all hazelnut yoghurts.

Adolescent↗

Poultry waste associated type C botulism in cattle.

Botulism in UK cattle has been confirmed by demonstrating type C botulinum toxin in sera from affected animals. Evidence is presented indicating the source of intoxication to be poultry carcasses containing type C Clostridium botulinum and its toxin. The organism was also found in poultry litter and in alimentary tract samples from slaughtered animals. The implications of these findings are discussed.

Animal Feed↗

Incubation period as a clinical predictor of botulism: analysis of previous izushi-borne outbreaks in Hokkaido, Japan, from 1951 to 1965.

This study investigated 21 foodborne type-E botulism outbreaks, without antitoxin administration, from 1951 to 1965 in Hokkaido, Japan, to characterize the descriptive epidemiology and evaluate the relationship between case fatality and incubation period. The median (25-75% quartile) attack rate and case fatality, which were evaluated by outbreak, were 58.3% (38.0-73.2) and 25.7% (0.1-50.0) respectively. Individual records of 64 diagnoses, including 31 deaths, were also examined using logistic regression analysis, revealing that a shorter incubation period is likely to result in a significantly higher risk of death (P=0.01). The observed case fatality was more than 50% for those who developed symptoms within the first 18 h after exposure, possibly reflecting underlying dose-dependent mechanisms. In the event of intentional contamination of food with botulinum toxin, rapidly determining the incubation periods may be critical for guiding public health response efforts.

Adult↗

An outbreak in Italy of botulism associated with a dessert made with mascarpone cream cheese.

In the late 1996, an outbreak of botulism affected eight young people (age of patients ranged from 6 to 23 years) in Italy. The onset of the illness was the same for all of these patients: gastrointestinal symptoms (nausea and vomiting) followed by neurologic symptoms. The most common neurologic symptoms were dysphagia, respiratory failure (100%), diplopia (87%), dysarthria, ptosis (75%) and mydriasis (50%). All patients required mechanical ventilation. Botulinum toxin was detected from two of respectively five sera and six stool samples analysed, while spores of Clostridium botulinum type A were recovered from all patient' faeces. The epidemiological investigation led to suspect a commercial cream cheese ('mascarpone') as a source of botulinum toxin: indeed, it had been eaten by all the patients before onset of the symptoms, either alone or as the (uncooked) ingredient of a dessert, 'tiramisù'. Botulinum toxin type A was found in the 'tiramisù' leftover consumed by two patients and in some mascarpone cheese samples collected from the same retail stores where the other patients had previously bought their cheeses. A break in the cold-chain at the retail has likely caused germination of C. botulinum spores contaminating the products, with subsequent production of the toxin. One of the patients died, while the others recovered very slowly. Prompt international alerting and recall of the mascarpone cheese prevented the spread of the outbreak due to the wide range of distribution, demonstrating the importance of a rapid surveillance system. None of the people complaining of symptoms after the public alert resulted positive for botulinum spores and toxin.

Adolescent↗

Wound botulism in drug addicts in the United Kingdom.

Clostridium novyi has recently been identified as the causative organism responsible for the deaths of 35 heroin addicts who had injected themselves intramuscularly. We present two heroin addicts who developed C. botulinum infection following intramuscular or subcutaneous injection of heroin. Like C. novyi, this grows under anaerobic conditions and clinical presentation may be similar; however, descending motor or autonomic signs are invariably present in botulism. The prognosis is good if the diagnosis is made early and appropriate treatment commenced.

Adult↗

Visceral botulism--a new form of bovine Clostridium botulinum toxication.

There are reports of a hitherto unknown bovine disease in Germany. The symptoms are, in general, indigestion (constipation alternating with diarrhoea), non-infectious chronic laminitis, engorged veins, oedemas, retracted abdomen, emaciation and apathy. Most cases occur during the peripartal period and often result in unexpected death. In addition, there are findings of delayed growth and wasting in heifers, as well as decreasing milk yield. Clinical and standard laboratory examinations leave the origin undisclosed. Bioassays for Clostridium botulinum, its spores and toxins in animals of affected farms revealed the presence of free botulinum toxin in the contents of the lower sections of the intestine. In two control farms without signs of the disease, the tests remained negative. This seems to support our hypothesis that long-lasting absorption of low quantities of botulinum toxin may interfere with the neurological control of intestinal physiology. The authors propose to name this disease complex 'visceral botulism'.

Animals↗

Infantile botulism: clinical and laboratory observations of a rare neuroparalytic disease.

A 3-month-old male infant was admitted to the University Hospital of Los Andes with a history of constipation, weak crying, poor feeding, flaccidity and later bilateral ptosis and hyporeflexia. The admission diagnosis was septicaemia until an electrophysiological study reported postetanic facilitation with 50 Hz/seg stimulations four days later. The Clostridium botulinum toxin type B was isolated from the infant's stool samples and the organism grew in anaerobic cultures. The patient recovered completely and was discharged 2 months later. Although infant botulism is an uncommon disease in our environment, this diagnosis must be suspected in all afebrile infants with constipation, affected cranial nerves and generalized hypotonia. The principal differential diagnoses are Landry-Guillain-Barré syndrome, poliomyelitis, myasthenia gravis and infant muscular atrophy.

Botulism↗

[Eye involvement in botulism].

The present paper reports on ophthalmological symptoms of type B botulism which occurred in 21 cases after they had eaten bacon. The absence of severe complications indicated that the intoxication was only slight. The suspected diagnosis was made by the ophthalmologist on the basis of the inevitable symptom of hyposalivation in combination with a deficit in accommodation.

Accommodation, Ocular↗

Polar poisons: did Botulism doom the Franklin expedition?

In 1845 the Franklin expedition left London with 2 ships and 134 men on board in an attempt to find the route through the Northwest Passage. The ships were built with state-of-the-art technology for their day, but provisioned with supplies from the lowest bidder. After taking on fresh provisions in the Whalefish Islands, off the coast of Greenland, the entire crew was never heard from again. Graves found on remote Beechey Island indicate that three able-bodied seamen died during the first winter. A note written on a ship's log, later found in a cairn, indicate that the expedition's leader, Sir John Franklin, died during the second winter entrapped on the ice, by which time 24 men had also perished. The remaining crew failed in their attempt to walk out of the Arctic by an overland route. In 1981 Owen Beattie, from the University of Alberta, exhumed the remains of the sailors from the three graves on Beechey Island. Elevated lead levels were found in all three sailors. While lead poisoning has been a leading theory of the cause of the crew's deaths, blamed on the crudely tinned provisions the ships carried with them from England, chronic lead exposure may only have weakened the crew, not necessarily killed them. One of three exhumed sailors also had in his intestine the spores of an unspecified Clostridium species. The theory put forth by this article is that Botulism, type E, which is endemic in the Arctic, may have been responsible for their deaths.

Botulism↗

The intestinal flora and infant botulism.

The intestinal flora of experimental animals interferes with infection by species of Salmonella and Shigella. Protection against infection with these organisms appears to be related to high concentrations of volatile acids, low pH, and low oxidation-reduction potential of the intestinal contents of animals with an intact flora. There are no data to show that the flora influences colonization of the intestine with clostridial species, but indirect evidence suggests that the intestinal flora may be involved in this process. The impact of the intestinal flora on the ecology of the large intestine may be the most important determinant of resistance to infant botulism.

Animals↗

Animal models for the study of infant botulism.

Intestinal infection with Clostridium botulinum was produced by intragastric administration of C. botulinum spores in conventionally reared mice seven to 13 days old but not in younger or older mice. The 50% infective dose of one of the culture strains administered was 170 spores per nine-day-old mouse. Overt botulism did not develop in these animals, but infection with C. botulinum was evidenced by the presence of botulinal toxin in the colon for up to seven days after challenge. Infant mice were at least as sensitive to the lethal action of botulinal toxin as were adult mice, and evidence suggests that infant rats may have a similar age-related susceptibility to enteric botulinal infection. Germfree adult mice were very susceptible to infection with C. botulinum, acquiring intestinally infective doses of airborne spores. Within a few days after exposure to normal mice, the axenic mice became resistant to challenge with 10(5) C. botulinum spores.

Age Factors↗

An international outbreak of type E botulism due to uneviscerated fish.

In October and November 1987, eight cases of type E botulism occurred in New York City and Israel. All eight patients had eaten uneviscerated, salted, air-dried whitefish known as kapchunka. Clostridium botulinum was isolated from samples of fish, and trypsinized portions of kapchunka contained type E toxin despite levels of salt that were far in excess of those considered adequate for safety. As C. botulinum has been found in the viscera of fish from the Great Lakes, possible explanations for the outbreak include multiplication of C. botulinum and production of toxin during shipping or during processing before the fish reached inhibitory salt levels. However, there was no evidence of mishandling of the fish. More likely, the viscera provided a relatively low salt "protective" environment for organism multiplication and toxin production. A major public health campaign was initiated and regulations were passed prohibiting the processing, distribution, and sale of raw, uneviscerated, salt-cured fish products within New York City.

Adult↗

Preventing complications in infant botulism.

By recognizing early signs of complications and intervening appropriately, the nurse plays a critical role in improving outcomes for infant botulism patients. The profound impact of the disease upon the family unit may be lessened by meticulous nursing care, parental support and education.

Botulism↗