html`
  <h3>${virus}</h3>
  <p>&nbsp;</p>
`

Symptoms

The onset of the second phase occurs several days after recovery, and consists of symptoms of meningitis or encephalitis.

The entire illness usually lasts 1 to 3 weeks, nonetheless, temporary or permanent neurological damage is possible in all central nervous system infections, especially in cases of meningoencephalitis.

Chronic infections have not been reported in humans and deaths rarely occur.

Transmission

Medical relevance

Lymphocytic choriomeningitis mammarenavirus (LCMV), was isolated in 1933 by Charles Armstrong during a study of an epidemic in St. Louis. Although not the cause of the outbreak, LCMV was found to be a cause of nonbacterial or aseptic meningitis.

Cases of lymphocytic choriomeningitis have been reported in North and South America, Europe, Australia, and Japan, particularly during the 1900s.

LCMV occurs now worldwide and its natural host, the rodent, has become established on all continents, except Antarctica.

Studies have indicated that human infection of the virus occurs primarily during the fall and winter months, presumably due to the movement of mice indoors.

Toolbox

The toolbox for this virus is currently in development. Please contact us via info@virusbankplatform.be for more information.

renderVirusToolbox("bunyaviruses", "LCMV")

import { encodeTool } from '/_js/functions.js'

FA = FileAttachment

// Load the toolbox
families = await FA("/families.json").json()
_toolbox = await FileAttachment("/toolbox/toolbox.json").json()
toolbox = _toolbox.map( tool => encodeTool(tool) )

// console.log(toolbox)

addEncodedTools = (virus) => {
  return ({ ... virus, tools: toolbox.flatMap( tool => virus[tool.encoded] ? tool.id : []) }) 
}

// Load all Newick tree file and create a dictionary `family -> tree`
nwks = await Promise.all(
  families.map(async (family) => { 
    let tree = await FA("/"+ family + "/tree.newick").text()
    return ({ family: family, nwk: tree })
  }))
nwksAsMap = Object.fromEntries(nwks.map( el => [el.family, el.nwk] ))

// console.log(nwks)

// Load annotations for viruses for each family
_annotations = await Promise.all(
  families.map( async (family) => {
    let xls = await FA("/"+ family + "/family.xlsx").xlsx()
    let _annotations = xls.sheet(0, { headers: true, range: ":L" })

    let _trimmed = _annotations.map( virus => {
      let trimmed = {}
      Object.keys(virus).forEach( key => {
        trimmed[key] = virus[key].trim()
      })
      return trimmed
    })

    return _trimmed.map( virus => ({... virus, family: family }) )
  }))

// console.log(_annotations)

// Add tools information, just the list of tools ids
annotations = _annotations
  .flat()
  .map( virus => addEncodedTools(virus) )

familyAnnotations = annotations
  .filter(virus => virus.family == virusFamily)

function virusInfo(_family, _virus) {
  const info = 
    familyAnnotations.filter(row => row.abbreviation == _virus && row.family == _family)
  return info[0]
}

// Handle grouped viruses by extending the model with isGroup: false/true
addGrouped = (virus) => {
  const isGroup = (typeof virus.group_abbreviation !== "undefined") && (virus.group_abbreviation !== "")
  const virus_pointer = (isGroup) ? virus.group_abbreviation : virus.abbreviation 
  return (
    { ... virus,
      isGroup: isGroup,
      virusPointer: virus_pointer,
      resVirusId: (isGroup) ? virus.group_abbreviation : virus.abbreviation,
      resAbbreviation: (isGroup) ? virus.group_abbreviation : virus.abbreviation,
      resVirusName: (isGroup) ? virus.group_virus_name : virus.virus_name 
    }
  )
}

// Create a list of all viruses of interest in the Excel file
// Add group information early on
annotatedViruses =
  familyAnnotations
    .filter(virus => virus.virus_of_interest == "Yes")
    .map(virus => addGrouped(virus))

// Create a sublist of viruses with toolbox
// Take into account groups by selecting unique entries
toolboxAnnotatedViruses =
  annotatedViruses
    .filter(virus => virus.availability_in_toolbox == "Yes")
    .filter((value, index, self) => {
      return self.findIndex(v => v.resAbbreviation === value.resAbbreviation) === index;
    })

// Derive a virus object from the ID
// The ID can be either a virus_id (from the ictv tree) or a group_abbreviation
virusIdToVirus = (virus_id) => {

  // lookup the virus_id in the full list of viruses
  const fullList =
    annotatedViruses
      .filter(v => v.virus_id.replace(/^'+|'+$/g, '') == virus_id || v.abbreviation == virus_id)
      //.filter(v => v.virus_id == virus_id || v.abbreviation == virus_id)

  // lookup the abbreviation for the group
  const groupList =
    toolboxAnnotatedViruses
      .filter(v => v.group_abbreviation == virus_id)

  if (fullList.length > 0) {
    return fullList[0]
  }
  if (groupList.length > 0) {
    return groupList[0]
  }
}

// Return all matches for a virus ID
virusIdToViruses = (virus_id) => {
  // lookup the virus_id in the full list of viruses
  const single_virus =
    annotatedViruses
      .filter(v => v.virus_id.replace(/^'+|'+$/g, '') == virus_id || v.abbreviation == virus_id)
      [0]

  if (single_virus.isGroup) {
    return annotatedViruses
      .filter(v => v.group_abbreviation == single_virus.group_abbreviation)
  } else {
    return [ single_virus ]
  }
}

function renderVirusToolbox(family, virus_id) {

  // First extract the virus object from the ID or abbreviation
  // This takes into account the groups
  const virus = virusIdToVirus(virus_id)

  if (typeof virus.tools !== "undefined" && virus.tools.length > 0) {
    return html`
      ${toolbox.filter(tool => virus.tools.includes(tool.id) ).map(tool => 
        html`
        <h2 id="${tool.id}-section">${tool.name}</h2>
        <div class="container grid">
          <div class="g-col-12 g-col-md-3 toolbox one-tool" style="text-align:center;">
            <div id="toolbox-contents" class="tool-container">
              <a href="/toolbox/index.html#${tool.id}-section">
                <div class="tool-wrapper">
                  <div id="${tool.id}" class="tool">
                    <div class="tool-tooltip-text">${tool.name}</div>
                    ${tool.icon.map( i =>
                    html`<img class="tool-icon" height="${(tool.icon.length > 1) ? 150/tool.icon.length : 100}%" src="${i}"/>`
                    )}
                  </div>
                </div>
              </a>
            </div>
          </div>
          <div class="g-col-12 g-col-md-9">
            <p>${tool.description}</p>
          </div>
          <div class="g-col-1" style="text-align:center;">
          </div>
        </div>
        <div class="col-xs-12" style="height:20px;"></div>
        `
      )}
    `
  }
   else {
    return html`
      <p>&nbsp;</p>
    `
   }
}