A biosafety level (BSL), or pathogen/protection level, is a set of biocontainment precautions required to isolate dangerous biological agents in an enclosed laboratory facility. The levels of containment range from the lowest biosafety level 1 (BSL-1) to the highest at level 4 (BSL-4). In the United States, the Centers for Disease Control and Prevention (CDC) have specified these levels in a publication referred to as Biosafety in Microbiological and Biomedical Laboratories (BMBL). In the European Union (EU), the same biosafety levels are defined in a directive. In Canada the four levels are known as Containment Levels. Facilities with these designations are also sometimes given as P1 through P4, as in the term P3 laboratory.
A biological hazard, or biohazard, is a biological substance that poses a threat to the health of living organisms, primarily humans. This could include a sample of a microorganism, virus or toxin that can adversely affect human health. A biohazard could also be a substance harmful to other living beings.
Rickettsia is a genus of nonmotile, gram-negative, nonspore-forming, highly pleomorphic bacteria that may occur in the forms of cocci, bacilli, or threads. The genus was named after Howard Taylor Ricketts in honor of his pioneering work on tick-borne spotted fever.
Rocky Mountain spotted fever (RMSF) is a bacterial disease spread by ticks. It typically begins with a fever and headache, which is followed a few days later with the development of a rash. The rash is generally made up of small spots of bleeding and starts on the wrists and ankles. Other symptoms may include muscle pains and vomiting. Long-term complications following recovery may include hearing loss or loss of part of an arm or leg.
Rickettsia rickettsii is a Gram-negative, intracellular, cocco-bacillus bacterium that was first discovered in 1902. Having a reduced genome, the bacterium harvests nutrients from its host cell to carry out respiration, making it an organo-heterotroph. Maintenance of its genome is carried out through vertical gene transfer where specialization of the bacterium allows it to shuttle host sugars directly into its TCA cycle.
The National Institute of Allergy and Infectious Diseases is one of the 27 institutes and centers that make up the National Institutes of Health (NIH), an agency of the United States Department of Health and Human Services (HHS). NIAID's mission is to conduct basic and applied research to better understand, treat, and prevent infectious, immunologic, and allergic diseases.
Tick-borne diseases, which afflict humans and other animals, are caused by infectious agents transmitted by tick bites. They are caused by infection with a variety of pathogens, including rickettsia and other types of bacteria, viruses, and protozoa. The economic impact of tick-borne diseases is considered to be substantial in humans, and tick-borne diseases are estimated to affect ~80 % of cattle worldwide. Most of these pathogens require passage through vertebrate hosts as part of their life cycle. Tick-borne infections in humans, farm animals, and companion animals are primarily associated with wildlife animal reservoirs. Many tick-borne infections in humans involve a complex cycle between wildlife animal reservoirs and tick vectors. The survival and transmission of these tick-borne viruses are closely linked to their interactions with tick vectors and host cells. These viruses are classified into different families, including Asfarviridae, Reoviridae, Rhabdoviridae, Orthomyxoviridae, Bunyaviridae, and Flaviviridae.
Howard Taylor Ricketts was an American pathologist after whom the family Rickettsiaceae and the order Rickettsiales are named.
Dermacentor variabilis, also known as the American dog tick or wood tick, is a species of tick that is known to carry bacteria responsible for several diseases in humans, including Rocky Mountain spotted fever and tularemia. It is one of the best-known hard ticks. Diseases are spread when it sucks blood from the host. It may take several days for the host to experience symptoms.
Wilhelm Burgdorfer was a Swiss-American scientist and an international leader in the field of medical entomology. He discovered the bacterial pathogen that causes Lyme disease, a spirochete named Borrelia burgdorferi in his honor.
The National Emerging Infectious Diseases Laboratories (NEIDL) is a biosciences facility of Boston University located in the clinical and biopharma hub of the South End neighborhood of Boston, Massachusetts.
The National Institute of Virology in Pune, India is an Indian virology research institute and part of the Indian Council of Medical Research (ICMR). It was previously known as 'Virus Research Centre' and was founded in collaboration with the Rockefeller Foundation. It has been designated as a WHO H5 reference laboratory for SE Asia region.
The Vaccine Research Center (VRC), is an intramural division of the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), US Department of Health and Human Services (HHS). The mission of the VRC is to discover and develop both vaccines and antibody-based products that target infectious diseases.
Yellow fever vaccine is a vaccine that protects against yellow fever. Yellow fever is a viral infection that occurs in Africa and South America. Most people begin to develop immunity within ten days of vaccination and 99% are protected within one month, and this appears to be lifelong. The vaccine can be used to control outbreaks of disease. It is given either by injection into a muscle or just under the skin.
Kathryn C. Zoon is a U.S.-based immunologist, elected to the U.S. Institute of Medicine in 2002 for her research on human interferons. She is the former scientific director of the Division of Intramural Research at the National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH) in Bethesda, Maryland. From 1992 to 2002, Zoon was director of the FDA Center for Biologics Evaluation and Research (CBER).
Julie E. Ledgerwood is an American allergist and immunologist, who is the chief medical officer and chief of the Clinical Trials Program at the Vaccine Research Center (VRC) of the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health in Bethesda, Maryland. She is a Doctor of Osteopathic Medicine.
Sonja Marie Best is an Australian-American virologist. She is chief of the innate immunity and pathogenesis section at the Rocky Mountain Laboratories. Best researches interactions between pathogenic viruses and the host immune response using flavivirus as a model.
Emmie de Wit is a Dutch-American virologist. She is chief of the molecular pathogenesis unit at the Rocky Mountain Laboratories. Her research combines pathogenesis studies with detailed molecular analyses to identify molecular determinants of severe respiratory tract disease within the virus and the host.
Andrea Marzi is a German-American virologist. She is chief of the immunobiology and molecular virology unit at the Rocky Mountain Laboratories. Marzi investigates the pathogenesis of filoviruses and vaccine development. She received the Loeffler-Frosch medal in recognition of her research.
Heinz (Heinrich) Ulrich Feldmann is a German-American virologist who currently serves as the chief of the laboratory of virology at Rocky Mountain Laboratories, NIAID and heads the Disease Modelling and Transmission section. His research focuses on highly pathogenic viruses that require strict biocontainment, including those that cause viral hemorrhagic fever such as Ebola and Lassa. He has been responsible for the development of timely viral countermeasures including the rVSV-ZEBOV vaccine (Ervebro), development of vaccines and drugs against SARS-CoV-2, and epidemiology of SARS-CoV.
