Objective: To analyze the epidemiological characteristics of anthrax in China from 2017 to 2019 and molecular typing of Bacillus anthracis isolated from some provinces (autonomous regions). Methods: Surveillance data of anthrax cases reported from 2017 to 2019 in the Infectious Disease Surveillance information System of China Disease Prevention and Control and the Public Health Emergency Reporting and Management Information System were collected, and descriptive epidemiological methods were used to analyze the epidemic characteristics, including the temporal, geographic and demographic distribution of this disease. A total of 47 strains of Bacillus anthracis isolated from 2017 to 2019 were analyzed by canSNP and MLVA15. Results: A total of 951 cases of anthrax were reported from 2017 to 2019, of which 938 were cutaneous anthrax, representing 98.63% of the total number reported. It was mainly distributed in the west and northeast of China, and the three provinces with the highest number of cases were Gansu (215), Sichuan (202) and Qinghai (191). Cases had been reported throughout the year, more cases occurred in the summer and autumn, and August was the month with the most cases,66.35% (211/318), 72.32% (243/336) and 68.01% (202/297) of cases were reported during June to September. The age distribution was mainly between 20 and 59 years old, accounting for more than 80% of all cases. The number of male cases was significantly higher than that of female cases, the ratio of male to female was about 3∶1. The occupations were mainly herdsmen and farmers, accounting for 49.70% to 58.18% and 31.45% to 36.70%, respectively. Public health events occurred every year, and 29 events had been reported from 2017 to 2019. canSNP analysis showed that 37 of the 47 strains belonged to the A.Br.001/002 subgroup and 10 belonged to the A.Br.Ames subgroup. MLVA15 analysis showed that there were 17 genotypes, of which 10 genotypes contained only one strain. Conclusion: Cutaneous anthrax was the predominant clinical type in China from 2017 to 2019.The seasonal, geographic and demographic distribution characteristics were evident.Molecular typing methods such as canSNP and MLVA15 can be used to trace the source of infectious diseases and provide technical support for anthrax prevention and control.
Adult ; Anthrax/prevention & control* ; Bacillus anthracis/genetics* ; China/epidemiology* ; Female ; Humans ; Male ; Middle Aged ; Molecular Typing ; Polymorphism, Single Nucleotide ; Skin Diseases, Bacterial ; Young Adult

On December 14, 2017, a faculty member of a university in Hunan Province reported that an anthrax vaccine strain might have recovered virulence during an undergraduate experiment and potential exposure could not be ruled out for the students involved. Upon receiving the case report, the CDC, health bureaus, and local governments at the county, prefectural, and provincial levels promptly organized experts in different fields (including epidemiologists, biosafety experts, and laboratory testing experts) for case investigation, evaluation, and response. As the investigation results showed, no virulence recovery was identified in the involved anthrax vaccine strain; and no contamination of Bacillus anthracis was detected at the involved areas. Thus, the university returned to normal functioning.
Anthrax Vaccines ; analysis ; Bacillus anthracis ; pathogenicity ; China ; Containment of Biohazards ; Humans ; Laboratories ; statistics & numerical data ; Virulence

PURPOSE: Foot-and-mouth disease (FMD) and anthrax are important diseases in sheep. Vaccination is a favorable strategy against both infections. Simultaneous administration of vaccines does generally not impede the immune responses of each other, although there are some exceptions, and it may help reduce the labor and costs of vaccination as well as distress on animals. Although oil adjuvant FMD vaccine has been tried with live anthrax vaccine in cattle, there are no reports on the simultaneous use of both vaccines in sheep. MATERIALS AND METHODS: In this study, FMD seronegative sheep were used to investigate the impact of the simultaneous vaccination of FMD and anthrax on FMD antibody titers of sheep. Virus neutralization test and liquid phase blocking enzyme-linked immunosorbent assay were used to determine the antibody response to the FMD vaccine. RESULTS: The results demonstrated that both vaccines can be used simultaneously without any interference with the FMD response. Moreover, the simultaneous administration with anthrax vaccine had a stimulating effect on the early (day 7 post-vaccination) virus neutralization antibody response to the FMD vaccine. CONCLUSION: The simultaneous use of the FMD and anthrax vaccines did not hinder the response to the FMD vaccine in sheep.
Animals ; Anthrax Vaccines ; Anthrax ; Antibody Formation ; Cattle ; Enzyme-Linked Immunosorbent Assay ; Foot-and-Mouth Disease ; Neutralization Tests ; Sheep ; Vaccination ; Vaccines

Anthrax, caused by Bacillus anthracis, is a non-contagious infectious disease that affects a wide range of animal species (primarily ruminants) including humans. Due to the often-fatal outcome in humans, quick administration of definitely effective antimicrobials is crucial either as prophylaxis or as a clinical case therapy. In this study, 110 B. anthracis strains, temporally, geographically, and genetically different, isolated during anthrax outbreaks in Italy from 1984 to 2017, were screened using a broth microdilution method to determine their susceptibility to 16 clinically relevant antimicrobial agents. The strains were isolated from various matrices (human, animal, and environmental samples) and were representative of thirty distinct genotypes previously identified by 15-loci multiple-locus variable-number of tandem repeats analysis. The antimicrobials tested were gentamicin, ceftriaxone, streptomycin, penicillin G, clindamycin, chloramphenicol, vancomycin, linezolid, cefotaxime, tetracycline, erythromycin, rifampin, amoxicillin, ciprofloxacin, doxycycline, and trimethoprim. All isolates were susceptible to most of the tested antimicrobials, with the exception of trimethoprim for which all of them showed high minimal inhibitory concentration values. An intermediate level of susceptibility was recorded for ceftriaxone and cefotaxime. Although the Centers for Disease Control and Prevention recommend the use of doxycycline, ciprofloxacin, penicillin G, and amoxicillin for treatment of human cases and for post-exposure prophylaxis to anthrax spores, this study shows a high degree of in vitro susceptibility of B. anthracis to many other antimicrobials, suggesting the possibility of an alternative choice for prophylaxis and therapy.
Amoxicillin ; Animals ; Anthrax ; Anti-Infective Agents ; Bacillus anthracis ; Bacillus ; Cefotaxime ; Ceftriaxone ; Centers for Disease Control and Prevention (U.S.) ; Chloramphenicol ; Ciprofloxacin ; Clindamycin ; Communicable Diseases ; Disease Outbreaks ; Doxycycline ; Erythromycin ; Genotype ; Gentamicins ; Humans ; In Vitro Techniques ; Italy ; Linezolid ; Methods ; Microbial Sensitivity Tests ; Penicillin G ; Post-Exposure Prophylaxis ; Rifampin ; Spores ; Streptomycin ; Tandem Repeat Sequences ; Tetracycline ; Trimethoprim ; Vancomycin

Anthrax ; epidemiology ; genetics ; China ; epidemiology ; Humans ; Phylogeny

The level of terrorist threats using chemical, biological, and radiological agents has been continuously increasing, and it is an undeniable truth that these agents are actually in use today. The fact that most chemical, biological, and radiological agents cause skin-related symptoms, and that the skin symptoms are observed at a relatively early stage of the condition, leads to the conclusion that dermatologists could be the first point of contact for potential victims of these agents. It is highly important that first responders are able to recognize symptoms caused by these agents early and react quickly. Therefore, dermatologists do have a responsibility to take on a role in dealing with chemical, biological, and radiological attacks, and pre-equip themselves with professional knowledge in this field. Among the various types of chemical agents, typical examples of agents causing skin-related symptoms are blistering agents, which lead to bullae and necrosis on the skin. Biological agents are classified from Category A to C according to their respective risk factors. The most dangerous Category A agents include anthrax, smallpox, plague, tularemia, and viral hemorrhagic fever, all of which are known to show characteristic skin-related symptoms. Upon exposure to a certain level of radiation, radiological agents can also lead to erythema on the skin. In this article, we will discuss various characteristics and up-to-date treatment methods of potential chemical, biological, and radiological agents to help dermatologists advance their knowledge in this field.
Anthrax ; Biological Factors ; Blister ; Erythema ; Hemorrhagic Fevers, Viral ; Necrosis ; Plague ; Risk Factors ; Skin ; Smallpox ; Terrorism ; Tularemia ; Weapons

The level of terrorist threats using chemical, biological, and radiological agents has been continuously increasing, and it is an undeniable truth that these agents are actually in use today. The fact that most chemical, biological, and radiological agents cause skin-related symptoms, and that the skin symptoms are observed at a relatively early stage of the condition, leads to the conclusion that dermatologists could be the first point of contact for potential victims of these agents. It is highly important that first responders are able to recognize symptoms caused by these agents early and react quickly. Therefore, dermatologists do have a responsibility to take on a role in dealing with chemical, biological, and radiological attacks, and pre-equip themselves with professional knowledge in this field. Among the various types of chemical agents, typical examples of agents causing skin-related symptoms are blistering agents, which lead to bullae and necrosis on the skin. Biological agents are classified from Category A to C according to their respective risk factors. The most dangerous Category A agents include anthrax, smallpox, plague, tularemia, and viral hemorrhagic fever, all of which are known to show characteristic skin-related symptoms. Upon exposure to a certain level of radiation, radiological agents can also lead to erythema on the skin. In this article, we will discuss various characteristics and up-to-date treatment methods of potential chemical, biological, and radiological agents to help dermatologists advance their knowledge in this field.
Anthrax ; Biological Factors ; Blister ; Erythema ; Hemorrhagic Fevers, Viral ; Necrosis ; Plague ; Risk Factors ; Skin ; Smallpox ; Terrorism ; Tularemia ; Weapons

Adult ; Aged ; Animals ; Anthrax ; epidemiology ; prevention & control ; veterinary ; Cattle ; Disease Outbreaks ; prevention & control ; Disinfection ; Dogs ; Female ; Humans ; Male ; Middle Aged ; Prevalence

Fluoroquinolones are an important class of antibiotics that are widely used in adult patients because of their broad spectrum of activity, good tissue penetration, and oral bioavailability. However, fluoroquinolone use in children is limited because juvenile animals developed arthropathy in previous experiments on fluoroquinolone use. Indications for fluoroquinolone use in patients younger than 18 years, as stated by the U.S. Food and Drug Administration, include treatment of complicated urinary tract infections and postexposure treatment for inhalation anthrax. In Korea, the systemic use of fluoroquinolones has not been approved in children younger than 18 years. Although concerns remain regarding the adverse musculoskeletal effects of fluoroquinolones in children, their use in the pediatric population has increased in many circumstances. While pediatricians should be aware of the indications and adverse effects of fluoroquinolones, recent studies have shown that the risk for musculoskeletal complications in children did not significantly increase following fluoroquinolone treatment. In addition, fluoroquinolones may be particularly helpful in treating multidrug-resistant infections that have not responded to standard antibiotic therapy in immunocompromised patients. In the present article, we provide an updated review on the safety and current recommendations for using fluoroquinolones in children.
Adult ; Animals ; Anthrax ; Anti-Bacterial Agents ; Biological Availability ; Child ; Fluoroquinolones ; Humans ; Immunocompromised Host ; Inhalation ; Joint Diseases ; Korea ; Respiratory Tract Infections ; United States Food and Drug Administration ; Urinary Tract Infections

Anthrax has become endemic throughout the upper Zambezi floodplain located in the Western Province of Zambia over the recent years. To date, no comprehensive study has been carried out to determine whether recurrence of anthrax outbreaks may be linked to differences in precipitation and human activities. Retrospective data for the period 1999 to 2007 showed that a total of 1,216 bovine cases of anthrax were reported. During the same period, 1,790 human anthrax cases and a corresponding case fatality rate of 4.63% (83/1,790) was documented in the upper Zambezi floodplain. Occurrence of human cases was highly correlated with cattle outbreaks (r = 0.94, p < 0.001). Differences in precipitation were significantly associated with the occurrence of anthrax outbreaks (chi2 = 4.75, p < 0.03), indicating that the likelihood of outbreaks occurring was higher during the dry months when human occupancy of the floodplain was greater compared to the flooding months when people and livestock moved out of this region. Human dependency on the floodplain was shown to significantly influence the epidemiology of anthrax in the upper Zambezi floodplain of western Zambia. Methods for mitigating anthrax outbreaks by disrupting the cycle of transmission are herein highlighted.
Animals ; Anthrax/*epidemiology/prevention & control/transmission/*veterinary ; Cattle ; Cattle Diseases/*epidemiology/prevention & control/transmission ; Climate ; Disease Outbreaks/*veterinary ; Human Activities ; Humans ; Retrospective Studies ; Seasons ; Zambia/epidemiology ; Zoonoses/epidemiology/microbiology/transmission