In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.

Input: Consider Input: Ebola virus (EBOV) disease can result in a range of symptoms anywhere from virtually asymptomatic to severe hemorrhagic fever during acute infection. Additionally, spans of asymptomatic persistence in recovering survivors is possible, during which transmission of the virus may occur. In acute infection, substantial cytokine storm and bystander lymphocyte apoptosis take place, resulting in uncontrolled, systemic inflammation in affected individuals. Recently, studies have demonstrated the presence of EBOV proteins VP40, glycoprotein (GP), and nucleoprotein (NP) packaged into extracellular vesicles (EVs) during infection. EVs containing EBOV proteins have been shown to induce apoptosis in recipient immune cells, as well as contain pro-inflammatory cytokines. In this manuscript, we review the current field of knowledge on EBOV EVs including the mechanisms of their biogenesis, their cargo and their effects in recipient cells. Furthermore, we discuss some of the effects that may be induced by EBOV EVs that have not yet been characterized and highlight the remaining questions and future directions. It is estimated that only approximately 20%-25% of GP products are the membrane-anchored GP 1,2 form, while the remaining 75%-80% are of the secreted type, with~70% sGP and~5% ssGP [7] [8] [9] [10] . During early infection, EBOV targets mainly monocytes/macrophages and dendritic cells (DCs). It is thought that these migrating cells aid in systemic dissemination of the virus throughout the host, especially into secondary lymphoid organs and the liver. Intense replication of the virus then takes place in other host cell types, including endothelial cells, epithelial cells, fibroblasts and hepatocytes [11] [12] [13] [14] . Fatal filovirus infections often involve severely dysregulated innate and adaptive immune responses, defective coagulation, and are typified by systemic cytokine storm and multi-organ failure. Immune system damage includes type-I and type-II interferon (IFN) antagonism by VP35 and VP24, respectively, NK and T-cell depletion known as bystander lymphocyte apoptosis, and impaired DC maturation [15] . Severe presentations of disease are accompanied by viral replication within and necrosis of the spleen, liver, kidneys, gonads, gastrointestinal tract and endocardium [13, 16] . In those who are fortunate enough to survive acute Ebola virus disease (EVD), the virus becomes undetectable in the blood, depicting a typical phenotype of viral clearance. However, either entire virus or viral components may remain detectable in patients relatively long after recovery, particularly in immune-privileged sites [17] [18] [19] [20] [21] [22] [23] [24] . Notably, recent studies have shown that over 1 in 4 male survivors from the 2016 outbreak contained virus within their semen up to 7-9 months past the disappearance of EVD symptoms. Furthermore, virus has still been detectable up to 16-18 months later [17] . This type of "clinical latency" or persistent infection has significance for public health in the following ways: (1) viral reservoirs within immune privileged sites have implications for reemergence and persistence of the virus within the infected individual, potentially allowing for resurgence of infection, morbidity, and mortality [25]; (2) these reservoirs may allow for the transmission of the virus to additional individuals long after initial infection, hindering efforts to control the spread of outbreaks by public health infrastructures [25]; and (3) significant political, socio-economic, and social stigma considerations must be taken into account for policies to support the normal life and travel of EVD survivors [26] [27] [28] [29] . Spread of the virus by this route is of particular concern, as several cases of sexual transmission from male to female have already been documented. One of the first such cases involved transmission from a man 6 months past his recovery to a woman in Liberia [30, 31] . To date, three additional "flare-ups" of EBOV by sexual contact have been determined, together accounting for approximately half of the eight mini-outbreaks caused by persistently infected survivors documented since 2016 [32] [33] [34] [35] . The most concerning of these cases occurred over 480 days (nearly 17 months) past the initial recovery of the patient [35] . To further complicate the matter, there have been multiple reports addressing potential asymptomatic or undiagnosed portions of the population. Previous studies have put the number of seropositive but undiagnosed/asymptomatic individuals anywhere between 0%-47% [36] [37] [38] [39] [40] [41] [42] [43] [44] . This of course implies that such individuals may represent an invisible source of viral transmission and future outbreaks. Exemplifying this is a case involving an asymptomatic mother who likely transmitted EBOV to her 9-month-old infant (as determined by sequencing and phylogenetic analysis) through breast milk, ultimately resulting in the fatality of the child [19] . Interestingly, the asymptomatic father's semen was also EBOV-positive, but was distantly related to the strains found in the mother and child. Currently, the mechanism of this viral persistence is not well characterized, although new studies have hinted as several possibilities, which will be discussed later. Extracellular vesicles (EVs) are small, membrane-bound vesicles that are released from numerous cell types and are involved in cell-to-cell communication. The intercellular communication is mediated by EV cargo, consisting of nucleic acids and proteins, which can be transferred between cells to elicit a phenotypic change in the recipient cell [45] [46] [47] . EVs are heterogeneous; as such, the current literature separates EVs into several different categories based mainly on differences in size and cellular origin, including subtypes such as exosomes and microvesicles [48] . Microvesicles bud directly from the plasma membrane and are generally larger than exosomes with diameters ranging from Viruses 2019, 11, 410 3 of 25

Output: viruses Extracellular Vesicles and Ebola Virus: A New Mechanism of Immune Evasion

Input: Consider Input: publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. An Pediatr (Barc). 2006;65(3):205-10 205 ORIGINALES Papel del rinovirus en las infecciones respiratorias en ninos hospitalizados Antecedentes El rinovirus se considera un agente causal de cuadros catarrales banales, sin embargo se ha descrito como un agente inductor de exacerbaciones asmaticas en adultos y ninos mayores. En nuestro medio no se ha descrito el papel del rinovirus en infecciones respiratorias de ninos hospitalizados. Objetivos Describir las infecciones confirmadas por rinovirus en ninos hospitalizados por infeccion respiratoria en un hospital de segundo nivel. We performed a prospective descriptive study in children admitted to hospital with fever or respiratory tract infection and with a positive isolation of rhinovirus in nasopharyngeal washings between September 2004 and July 2005. Virological diagnosis was made with direct immunofluorescent assay and/or reverse transcription-polymerase chain reaction in specimens obtained from nasopha-Estudio parcialmente financiado por el Fondo de Investigaciones Sanitarias. FIS N. 98/0310. Correspondencia: Dra. C. Calvo Rey. Viento, 5, 5. A. 28760 Tres Cantos. Madrid. Espana. Correo electronico: ccalvo@mi.madritel.es Recibido en noviembre de 2005. Aceptado para su publicacion en marzo de 2006. Calvo Rey C, et al. Rinovirus en las infecciones respiratorias en ninos hospitalizados 206 An Pediatr (Barc). 2006;65(3):205-10 ryngeal washings. The clinical characteristics of the patients were analyzed. There were 76 children with rhinovirus infection, representing 25 % of admissions in 304 children with fever or respiratory tract infection. Rhinovirus was the second most frequent viral agent identified after respiratory syncytial virus (RSV) (29.9 % of admissions). Fifty-four children (71.1 %) were under 2 years of age. The most frequent clinical diagnoses were recurrent wheezing in 60.5 %, bronchiolitis in 23.7 %, pneumonia in 7.9 %, and upper respiratory tract infection in 5.3 %. Fever > 38C was present in 57.9 % of the patients and radiologic infiltrate was found in 23.7 %. Oxygen saturation less than 95 % was found in 43.4 % of the patients. Of 22 children aged more than 2 years, a diagnosis of asthmatic crisis was made in 21. Rhinoviruses were frequently identified in hospitalized children with respiratory tract disease and were the second most common viruses after RSV. In our series, it was the most frequent cause of recurrent wheezing in hospitalized children and the second most common cause in infants.

Output: ROLE OF RHINOVIRUS IN RESPIRATORY TRACT INFECTIONS IN HOSPITALIZED CHILDREN Background

Input: Consider Input: The causative agent of Severe Acute Respiratory Syndrome (SARS) was identified as a coronavirus (CoV) following the outbreak of 2002-2003. There are currently no licensed vaccines or treatments for SARS-CoV infections. Potential prevention and control strategies that show promise in vitro must be evaluated in animal models. The aged BALB/c mouse model for SARS supports a high level of viral replication in association with clinical illness and disease that mimics SARS in the elderly. We tested two preventive strategies, vaccination and passive transfer of serum antibody, to determine the extent of protection achieved against SARS-CoV challenge in this model. These approaches were able to achieve or induce antibody titers sufficient to reduce viral load, protect from weight loss and reduce or eliminate histopathologic changes in the lungs of aged mice. This study validates the utility of the aged BALB/c mouse model for evaluation of the efficacy of vaccines and immunoprophylaxis. Published by Elsevier Ltd.
Output: Utility of the aged BALB/c mouse model to demonstrate prevention and control strategies for Severe Acute Respiratory Syndrome coronavirus (SARS-CoV)