Rift Valley fever virus-infected mosquito ova and associated pathology: possible implications for endemic maintenance

William S Romoser1 Department of Biomedical Sciences, College of Osteopathic Medicine, Tropical Disease Institute, Ohio University, Athens, Ohio, USA, [email protected]Correspondence[email protected]

Marco Neira Oviedo1 Department of Biomedical Sciences, College of Osteopathic Medicine, Tropical Disease Institute, Ohio University, Athens, Ohio, USA, [email protected]

Kriangkrai Lerdthusnee2 Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok, Thailand

Lisa A Patrican3 Infectious Disease Division, National Center for Medical Intelligence, Fort Detrick, Frederick, Maryland, USA

Michael J Turell4 Department of Vector Assessment, Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA

David J Dohm4 Department of Vector Assessment, Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA

Kenneth J Linthicum5 Center for Medical, Agricultural, and Veterinary Entomology, United States Department of Agriculture – Agricultural Research Service, Gainesville, Florida, USA

Charles L Bailey6 National Center for Biodefense and Infectious Disease, School of Systems Biology, College of Science, George Mason University, Manassas, Virginia, USA

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Figures & data

Figure 1 (A, B) RVFV antigen in chorionated eggs showing pathology and RVFV antigen-negative germarium (B). (C) Chorionated egg with distinct traces of RVFV antigen. (D) Uninfected chorionated egg with antigen-positive ovariolar sheath. (E) Uninfected chorionated eggs with RVFV antigen-positive ovarian sheath. (F) Sagittal section in posterior part of the abdomen showing antigen-positive oviduct epithelium and tissues in proximity to the spermathecae. (G) Antigen-positive small tracheae associated with the ovaries. (B) Section of spermathecae and adjacent antigen-positive tissues, and antigen-negative accessory gland. (I–L) Negative control sections.

Note: Scale lines (µm): A–E, 150; F, 100; G, 20; H, 50; I–L, 50.
Abbreviations: Ag, RVFV antigen; AG, accessory gland; Ch, chorion; CO, common oviduct; FE, follicular epithelium; Ge, germarium; OS, ovary sheath; OvS, ovariole sheath; RVFV, Rift Valley fever virus; Sp, spermatheca; TL, tracheal lumen; Tr, trachea; UE, uninfected egg; UF, uninfected follicle; Yo, yolk.

Table 1 RVFV antigen in Aedes mcintoshi female reproductive tissues

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Rift Valley fever virus-infected mosquito ova and associated pathology: possible implications for endemic maintenance

Table 1 RVFV antigen in Aedes mcintoshi female reproductive tissues

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Rift Valley fever virus-infected mosquito ova and associated pathology: possible implications for endemic maintenance

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Table 1 RVFV antigen in Aedes mcintoshi female reproductive tissues

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