11 documents found, page 1 of 2
SARS-CoV-2 RNA Presence in Outdoor Air of Public Spaces in Valladolid During Wi...
da Silva, PG; Gonçalves, J; Rodriguéz, E; García-Encina, PA; Nascimento, MSJ; Sousa, SIV; Mesquita, JRAs SARS-CoV-2 continues to evolve and herd immunity establishes, an increasing number of asymptomatic infections have been reported, increasing the risk of airborne spread of the virus. Most of the studies regarding SARS-CoV-2 RNA presence in air refer to indoor environments, with few studies having reported SARS-CoV-2 RNA in outdoor air. The aim of this study was to assess the presence of SARS-CoV-2 RNA at two...
Presence of Alphacoronavirus in Tree- and Crevice-Dwelling Bats from Portugal
Hemnani, M; da Silva, PG; Thompson, G; Poeta, P; Rebelo, H; Mesquita, JRCoronaviruses (CoVs) are RNA viruses capable of infecting a wide range of hosts, including mammals and birds, and have caused significant epidemics such as the ongoing COVID-19 pandemic. Bats, the second most diverse mammalian order, are hosts for various CoVs due to their unique immune responses and ecological traits. This study investigates CoV prevalence in crevice- and tree-dwelling bats in Portugal, a coun...
Detection and Prevalence of Coronaviruses in European Bats: A Systematic Review
Hemnani, M; da Silva, PG; Thompson, G; Poeta, P; Rebelo, H; Mesquita, JRBats are known hosts for a wide range of coronaviruses (CoVs), including those that cause severe acute respiratory syndrome (SARS-CoV-1) and Middle East respiratory syndrome (MERS-CoV). With the emergence of the COVID-19 pandemic caused by the SARS-CoV-2 virus, it has become increasingly important to understand the diversity and prevalence of CoVs in bat populations. This systematic review aimed to compile stud...
Airborne SARS-CoV-2 is more frequently detected in environments related to chil...
da Silva, PG; Hemnani, M; Gonçalves, J; Rodriguéz, E; García-Encina, PA; Nascimento, MSJ; Sousa, SIV; Myrmel, M; Mesquita, JRThis study investigates the presence of SARS-CoV-2 in indoor and outdoor environments in two cities in Norway between April and May 2022. With the lifting of COVID-19 restrictions in the country and a focus on vaccination, this research aims to shed light on the potential for virus transmission in various settings. Air sampling was conducted in healthcare and non-healthcare facilities, covering locations freque...
First Report of Alphacoronavirus Circulating in Cavernicolous Bats from Portugal
Hemnani, M; da Silva, PG; Thompson, G; Poeta, P; Rebelo, H; Mesquita, JRThe emergence of novel coronaviruses (CoVs) has emphasized the need to understand their diversity and distribution in animal populations. Bats have been identified as crucial reservoirs for CoVs, and they are found in various bat species worldwide. In this study, we investigated the presence of CoVs of four cavernicolous bats in six locations in the centre and south of Portugal. We collected faeces, anal, and b...
Serological Cross-Reactivity in Zoonotic Flaviviral Infections of Medical Impor...
da Silva, PG; dos Reis, JAS; Rodrigues, MN; Ardaya, QD; Mesquita, JRFlaviviruses are enveloped RNA viruses from the family Flaviviridae that comprise many important human pathogenic arboviruses such as Yellow Fever, Dengue, and Zika viruses. Because they belong to the same genus, these viruses show sequence and structural homology among them, which results in serological cross-reactivity. Upon infection, the immune system produces both species-specific and cross-reactive antibo...
Evidence of Air and Surface Contamination with SARS-CoV-2 in a Major Hospital i...
da Silva, PG; Goncalves, J; Lopes, AIB; Esteves, NA; Bamba, GEE; Nascimento, MS; Branco, PTBS; Soares, RRG; Sousa, SIV; Mesquita, JRAs the third wave of the COVID-19 pandemic hit Portugal, it forced the country to reintroduce lockdown measures due to hospitals reaching their full capacities. Under these circumstances, environmental contamination by SARS-CoV-2 in different areas of one of Portugal's major Hospitals was assessed between 21 January and 11 February 2021. Air samples (n = 44) were collected from eleven different areas of the Hos...
Detection of SARS-CoV-2 in the Indoor and Outdoor Areas of Urban Public Transpo...
da Silva, PG; Gonçalves, J; Nascimento, MSJ; Sousa, SIV; Mesquita, JRAirborne transmission is mainly associated with poorly ventilated and crowded indoor environments where people stay for long periods of time. As such, public transport is often perceived as having a high risk for the transmission of SARS-CoV-2. Considering that data on the detection of SARS-CoV-2 in public transport systems are scarce, we performed air sampling for SARS-CoV-2 in indoor and outdoor spaces of pub...
Evidence of Air and Surface Contamination with SARS-CoV-2 in a Major Hospital i...
da Silva, PG; Gonçalves, J; Lopes, AIB; Esteves, NA; Bamba, GEE; Nascimento, MSJ; Branco, PTBS; Soares, RRG; Sousa, SIV; Mesquita, JRAs the third wave of the COVID-19 pandemic hit Portugal, it forced the country to reintro-duce lockdown measures due to hospitals reaching their full capacities. Under these circumstances, environmental contamination by SARS-CoV-2 in different areas of one of Portugal’s major Hospitals was assessed between 21 January and 11 February 2021. Air samples (n = 44) were collected from eleven different areas of the Ho...
Surface contamination with SARS-CoV-2: A systematic review
Gonçalves, J; da Silva, PG; Reis, L; Nascimento, MSJ; Koritnik, T; Paragi, M; Mesquita, JRLittle is known about contaminated surfaces as a route of transmission for SARS-CoV- 2 and a systematic review is missing and urgently needed to provide guidelines for future research studies. As such, the aim of the present study was to review the current scientific knowledge and to summarize the existing studies in which SARS-CoV-2 has been detected in inanimate surfaces. This systematic review includes studi...