Last data update: Apr 29, 2024. (Total: 46658 publications since 2009)
Records 1-4 (of 4 Records) |
Query Trace: Marus J[original query] |
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Evaluation of avocados as a possible source of Listeria monocytogenes infections, United States, 2016-2019.
Pomeroy M , Conrad A , Pettengill JB , McClure M , Wellman AA , Marus J , Huffman J , Wise M . J Food Prot 2021 84 (7) 1122-1126 Outbreaks of Listeria monocytogenes (L. monocytogenes) infections have historically been associated with contaminated deli meats, but recent outbreaks have been linked to produce. To date, avocados have not been identified as the source of any outbreaks of L. monocytogenes infections in the United States, but avocado samples have yielded strains that were closely related genetically to clinical L. monocytogenes isolates. To determine whether avocados have been a source of listeriosis, we conducted a retrospective review of epidemiological data for clinical isolates that were genetically related to isolates from avocados. Using a national database, we identified clusters containing clinical and at least one avocado isolate. We then selected clusters based upon isolation dates, cluster and composition size, and available food history data. For each cluster, we assessed whether (1) avocado consumption was higher among case-patients in the cluster than among those with sporadic illnesses, and (2) whether the only food isolates within the cluster were from avocados. If both conditions were met, the link was considered "likely," if one condition was met the link was considered "possible," and if neither condition was met evidence was "limited." Five of fifteen clusters met criteria for assessment. Of these, two were classified as having "limited" evidence for a link to avocados, two as "possible," and one as "likely." For the cluster considered "likely", avocado consumption was significantly higher among case-patients in the cluster compared to sporadic illnesses (Odds ratio: 8.5, 95% CI 1.5-86.5). We identified three clusters that were likely or possibly linked to avocados, suggesting avocados could be a source of listeriosis in the United States. Messaging on safe handling might be warranted for groups at higher risk, but further research is first needed to better characterize the ecology of pathogens on avocados and likelihood of internalization of L. monocytogenes. |
Outbreaks of Salmonella enterica infections linked to animal contact: Demographic and outbreak characteristics and comparison to foodborne outbreaks - United States, 2009-2014
Marus JR , Magee MJ , Manikonda K , Nichols MC . Zoonoses Public Health 2019 66 (4) 370-376 In the United States, multistate Salmonella outbreaks are most commonly linked to a food source; however, contact with live animals can also result in outbreaks of human illness. To characterize Salmonella outbreaks linked to animal contact and examine differences compared to foodborne outbreaks, we analysed data reported to the Centers for Disease Control and Prevention through the National Outbreak Reporting System (NORS) from 2009 to 2014 with a primary mode of transmission listed as "animal contact" or "food." Four hundred and eighty-four outbreaks with animal contact or foodborne transmission were reported through NORS; of these outbreaks, 99 (20.5%) resulted from Salmonella transmission through animal contact and 385 (79.5%) resulted from foodborne transmission, which resulted in 3,604 (19.8%) and 13,568 (80.2%) illnesses, respectively. A higher proportion of illnesses among children aged <1 year and children aged 1-4 years were linked to animal contact outbreaks compared to foodborne outbreaks (15.2% vs. 1.4%, p < 0.01 and 24.5% vs. 5.6%, p < 0.01, respectively). Illnesses resulting in hospitalizations (OR: 1.81, 95% CI: 1.62, 2.02) were more likely to be associated with animal contact compared to food. Animal contact outbreaks reported to NORS were more likely to be multistate compared to foodborne outbreaks (OR: 5.43, 95% CI: 3.37, 8.76) and had a longer median duration (99.0 days vs. 9.0 days, p < 0.01). Characterizing the differences between outbreaks of illness linked to animal contact and outbreaks linked to food provides useful information to investigators to improve public health response. |
Notes from the Field: Outbreak of Listeriosis Likely Associated with Prepackaged Caramel Apples - United States, 2017.
Marus JR , Bidol S , Altman SM , Oni O , Parker-Strobe N , Otto M , Pereira E , Buchholz A , Huffman J , Conrad AR , Wise ME . MMWR Morb Mortal Wkly Rep 2019 68 (3) 76-77 On December 1, 2017, PulseNet, CDC’s molecular subtyping network for foodborne disease surveillance, identified a cluster of three Listeria monocytogenes clinical isolates with indistinguishable pulsed-field gel electrophoresis (PFGE) pattern combinations. These isolates were closely related to one another by whole-genome multilocus sequence typing within three allele differences (range = 0–3 alleles), indicating that the infections were likely from the same source. CDC, the Food and Drug Administration (FDA), and state and local health departments initiated a multistate investigation. An outbreak case of listeriosis was defined as an infection with L. monocytogenes, with an isolate that was indistinguishable by PFGE and closely related by whole-genome multilocus sequence typing to the outbreak strain isolated during October–December 2017. |
African tick bite fever treated successfully with rifampin in a patient with doxycycline intolerance
Strand A , Paddock CD , Rinehart AR , Condit ME , Marus JR , Gilliani S , Chung IH , Fowler VG Jr . Clin Infect Dis 2017 65 (9) 1582-1584 African tick bite fever is the most commonly encountered travel-associated rickettsiosis, occurring in as many as 5% of travelers returning from rural sub-equatorial Africa. This case report illustrates that rifampin represents an effective alternative to doxycycline for treatment of ATBF in some selective situations. |
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