Novel Inactivated Zika Vaccine Candidate Based on Purified Wild-type Zika Virus — for Zika Vaccine and Diagnostic Assay Development

Zika virus (ZIKV) spreads to people primarily through bite by infected Aedes mosquitoes. ZIKV infection during pregnancy can cause stillbirths or affect the fetus by causing serious birth defects, such as microcephaly and other brain defects. Although uncommon, adults with ZIKV can also develop Guillain-Barre syndrome and other neurological disorders. According to the World Health Organization’s July 2019 report, a total of 87 countries and territories have had evidence of mosquito-borne transmission of ZIKV.

Human Monoclonal Antibodies That Recognize Influenza A Viruses for Vaccine, Therapeutic, and Diagnostic Development

Human influenza A is one of two influenza virus types that cause seasonal epidemics of disease (known as flu season) almost every winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics (i.e., global epidemics of flu disease). (Source.)

Hybridomas Producing Antibodies to Neuraminidase for Influenza A (H3N2) Diagnostics, Vaccine, and Therapeutic Development

Influenza A and B viruses can cause seasonal flu epidemics ― commonly known as the “flu season” ― and infect the nose, throat, eyes, and lungs in humans. Typically, flu seasons that are dominated by influenza A (H3N2) virus activity have higher associated hospitalizations and deaths in at-risk groups, such as people ages 65 and older and young children.

Codon Deoptimized (CD) Poliovirus Seed Strains for Use in an Inactivated Poliovirus Vaccine

Polio is a disabling and potentially fatal infectious disease. Sabin Oral Poliovirus Vaccine (OPV) and Salk Inactivated Poliovirus Vaccine (IPV) have been crucial in the global poliovirus eradication efforts and substantial decrease in disease incidence rates. However, recent findings showed that Sabin OPV strains, due to their genetic instability, may revert to virulence and spread among communities, resulting in circulating vaccine-derived poliovirus (cVDPV). Salk IPV, which is made by inactivating live poliovirus, poses a potential threat of viral containment breach (spill/exposure) duri

Simultaneous Detection of Non-pneumophila Legionella Strains Using Real-time PCR

Legionnaires' disease is caused by a type of bacteria called Legionella. CDC scientists have developed a real-time multiplex PCR assay for diagnosis and identification of Legionella strains. The assay consists of five sets of primers (targeting L. bozemanii, L. dumoffii, L. feeleii, L. longbeachae, or L. micdadei) and corresponding probes. Each probe is labeled with a different fluorophore which allows the detection of a particular strain in a single tube reaction.

Real-Time RT-PCR Assay for Detection of Noroviruses

A specific and sensitive TaqMan-based real-time (rt) RT-PCR assay has been developed by CDC scientists for detection of noroviruses in clinical and environmental specimens. This assay can be implemented to rapidly detect and distinguish norovirus strains from genogroups I and II, which are responsible for the majority of human infections. Additionally, the assay is multiplexed with an internal extraction control virus (coliphage MS2) to validate the results of the assay.

Use of Vitronectin as a Biomarker for the Detection of Dengue Hemorrhagic Fever

Dengue hemorrhagic fever (DHF) is a severe, potentially deadly infection spread by mosquitos. CDC scientists have identified vitronectin as an important biomarker of DHF. They have shown vitronectin is significantly reduced in DHF and severe dengue infections when compared to dengue non-hemorrhagic fever patients. Presently, DHF is established by assessing antibody concentrations and other rule-of-thumb criteria, but often these assays can be difficult to interpret and lead to false conclusions.

CDC Mosquito Trap for Control and Surveillance of Mosquitoes Including Carriers of Zika & Other Viruses

Mosquitoes are responsible for spreading many viruses that can make people sick, including dengue, Zika, chikungunya, yellow fever, and more. The Centers for Disease Control and Prevention's (CDC's) new autocidal gravid ovitrap (AGO) mosquito trap is an inexpensive, simple-to-assemble, and easy-to-maintain trap that targets female mosquitoes looking for a place to lay eggs. The current trap model stands 18 inches (45cm) tall and is made of a 5-gallon (18L) bucket. The AGO trap's unique design lures mosquitoes by using water and an all-natural, organic hay attractant.

Multiplex Assay for Detection of Dengue Virus

Dengue virus (DENV) is the cause of dengue illness (dengue fever, dengue hemorrhagic fever, and dengue shock syndrome). CDC researchers have developed a RT-PCR multiplex assay that, prior to sero-conversion, selectively detects dengue virus in biological or other fluid media, such as whole blood, plasma, or serum. The primers and probes from this assay are sufficiently specific to amplify and detect all four DENV serotypes. This FDA-approved technology may provide an improved method for rapid and accurate serotyping of dengue virus in clinical and research settings.

Rapid Detection of Multi-Drug-Resistant Mycobacterium tuberculosis Using Real-Time PCR and High-Resolution Melt Analysis

CDC scientists have developed a rapid, sensitive, and specific real-time PCR assay that is capable of detecting the presence of Mycobacterium tuberculosis and determining its resistance profile to antibiotics, such as rifampicin and isoniazid. Currently, there are few assays available that are capable of both detecting M. tuberculosis and determining the bacteria's drug resistance. This assay incorporates multiple fluorescent chemistries, providing a simple and cost-effective method of determining the bacteria's drug resistance.