PMID- 37488618 OWN - NLM STAT- MEDLINE DCOM- 20230727 LR - 20230727 IS - 1756-3305 (Electronic) IS - 1756-3305 (Linking) VI - 16 IP - 1 DP - 2023 Jul 24 TI - Tick salivary gland components dampen Kasokero virus infection and shedding in its vertebrate reservoir, the Egyptian rousette bat (Rousettus aegyptiacus). PG - 249 LID - 10.1186/s13071-023-05853-7 [doi] LID - 249 AB - BACKGROUND: The human-pathogenic Kasokero virus (KASV) circulates in an enzootic transmission cycle between Egyptian rousette bats (ERBs; Rousettus aegyptiacus) and their argasid tick ectoparasites, Ornithodoros (Reticulinasus) faini. Although tick salivary gland components have been shown to potentiate virus infection in vertebrate non-reservoirs (i.e. incidental hosts or small animal models of disease), there is a lack of information on the effect of tick salivary gland components on viral infection and shedding in vertebrate reservoirs. METHODS: To determine the impact of tick salivary gland components on KASV infection and shedding in ERBs, KASV loads were quantified in blood, oral swab, rectal swab, and urine specimens collected daily through 18 days post inoculation from groups of ERBs intradermally inoculated with KASV or KASV + O. (R.) faini tick salivary gland extract (SGE). RESULTS: Bats inoculated with KASV + tick SGE had significantly lower peak and cumulative KASV viremias and rectal shedding loads compared to bats inoculated with KASV only. CONCLUSIONS: We report for the first time to our knowledge that tick salivary gland components dampen arbovirus infection and shedding in a vertebrate reservoir. This study advances our understanding of biological factors underlying arbovirus maintenance in nature. CI - (c) 2023. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply. FAU - Schuh, Amy J AU - Schuh AJ AD - Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, United States Centers for Disease Control and Prevention, Atlanta, GA, USA. wuc2@cdc.gov. AD - United States Public Health Service Commissioned Corps, Rockville, MD, USA. wuc2@cdc.gov. FAU - Amman, Brian R AU - Amman BR AD - Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, United States Centers for Disease Control and Prevention, Atlanta, GA, USA. FAU - Guito, Jonathan C AU - Guito JC AD - Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, United States Centers for Disease Control and Prevention, Atlanta, GA, USA. FAU - Graziano, James C AU - Graziano JC AD - Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, United States Centers for Disease Control and Prevention, Atlanta, GA, USA. FAU - Sealy, Tara K AU - Sealy TK AD - Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, United States Centers for Disease Control and Prevention, Atlanta, GA, USA. FAU - Towner, Jonathan S AU - Towner JS AD - Viral Special Pathogens Branch, Division of High-Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, United States Centers for Disease Control and Prevention, Atlanta, GA, USA. jit8@cdc.gov. LA - eng GR - HDTRA 1033037/Defense Threat Reduction Agency/ GR - HDTRA 1033037/Defense Threat Reduction Agency/ GR - HDTRA 1033037/Defense Threat Reduction Agency/ GR - HDTRA 1033037/Defense Threat Reduction Agency/ GR - HDTRA 1033037/Defense Threat Reduction Agency/ GR - HDTRA 1033037/Defense Threat Reduction Agency/ PT - Journal Article DEP - 20230724 PL - England TA - Parasit Vectors JT - Parasites & vectors JID - 101462774 SB - IM MH - Animals MH - Humans MH - *Chiroptera MH - *Marburgvirus MH - Salivary Glands MH - *Ornithodoros MH - Viremia PMC - PMC10367358 OTO - NOTNLM OT - Chiroptera OT - Host interactions OT - Infection OT - Infectious disease reservoir OT - Insect vectors OT - Saliva OT - Ticks OT - Vector-borne diseases OT - Virus OT - Viruses OT - Zoonoses COIS- The authors declare that they have no competing interests. EDAT- 2023/07/25 01:09 MHDA- 2023/07/27 06:42 PMCR- 2023/07/24 CRDT- 2023/07/24 23:47 PHST- 2023/04/21 00:00 [received] PHST- 2023/06/27 00:00 [accepted] PHST- 2023/07/27 06:42 [medline] PHST- 2023/07/25 01:09 [pubmed] PHST- 2023/07/24 23:47 [entrez] PHST- 2023/07/24 00:00 [pmc-release] AID - 10.1186/s13071-023-05853-7 [pii] AID - 5853 [pii] AID - 10.1186/s13071-023-05853-7 [doi] PST - epublish SO - Parasit Vectors. 2023 Jul 24;16(1):249. doi: 10.1186/s13071-023-05853-7.