Learn More
On August 3, 1976, ongoing Salmonella surveillance in Colorado first detected an epidemic of Salmonella heidelberg infections that eventually totaled 339 isolates. The majority of the cases occurred between July 23 and August 12 in two widely separated cities: Denver and Pueblo. Epidemiologic investigation successively incriminated 1) recent dining at(More)
An interstate common-source outbreak of salmonellosis was first detected in the United States in September and October, 1975, when a tenfold increase in Salmonella newport isolates was noted through routine salmonella surveillance by the Colorado Department of Health. Eighteen primary cases with a distinctive antibiotic resistance pattern (tetracycline,(More)
Epizootics of encephalitis in El Salvador killed 203 equines between November 2001 and April 2003. During an investigation of the outbreaks, 18 (25%) of 73 serum samples collected from stablemates of deceased animals in 2003 had antibodies to West Nile virus. Ten of these infections were confirmed by plaque reduction neutralization tests, suggesting West(More)
BACKGROUND After a community investigation had implicated hospital admission as a shared feature of a cluster of acute Plasmodium falciparum malaria (AFM) cases in Riyadh, Saudi Arabia, we began an in-hospital investigation to determine the method of transmission. METHODS We investigated all AFM patients admitted to one paediatric hospital for any reason(More)
BACKGROUND Hygiene and social distancing are recommended control measures for hand, foot, and mouth disease (HFMD) and herpangina. However, empirical data to support this recommendation are limited. METHODS During an outbreak of HFMD and herpangina due to infection by the human enterovirus 71, we defined a case as a vesicular papular rash on the hands,(More)
OBJECTIVE To identify the epidemiological and clinical features of unexpected sudden cardiac deaths (SUD) in Yunnan. METHODS Choosing the old SUD cases from Xiangyun, Heqing, Nanjian and Dayao counties and using the standardized verbal autopsy Form, we interviewed the family members of the cases, witnesses and doctors as well as reviewing their medical(More)
BACKGROUND Glucocorticoids increase the risk of developing critical disease from viral infections. However, primary care practitioners in China use them as antipyretics, potentially exposing hundreds of millions to this risk. METHODS We enrolled all patients with confirmed pandemic influenza A (pH1N1) virus infection aged ≥3 years with available medical(More)
Cases of toxic distal polyneuropathy have been studied in a plant producing plastic-coated and color-printed fabrics. After the screenig of 1,157 employees, a total of 86 verified cases were detected. Of these, 11 were moderate to severe in intensity and usually with motor and sensory involvement; 38 were mild, with sensory signs prevailing; and 37 were(More)
A girl developed Plasmodium falciparum malaria in Riyadh, Saudi Arabia, a non-malarious area. Twelve to 18 days before onset, she had been hospitalized for asthma on the same ward as three malaria patients. The only link between the malaria patients and the asthma patient was a multidose heparin container used to fill syringes for use on heparin locks and(More)