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<front>
<journal-meta>
<journal-id>1684-1824</journal-id>
<journal-title><![CDATA[Revista Médica Electrónica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Med.Electrón.]]></abbrev-journal-title>
<issn>1684-1824</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de Matanzas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1684-18242021000103003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Covid-19: la esperada vacuna]]></article-title>
<article-title xml:lang="en"><![CDATA[Covid-19: the expected vaccine]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lovo]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de El Salvador  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>El Salvador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<volume>43</volume>
<numero>1</numero>
<fpage>3003</fpage>
<lpage>3007</lpage>
<copyright-statement/>
<copyright-year/>
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</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rourke]]></surname>
<given-names><![CDATA[EJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Waiting. New England Journal of Medicine]]></article-title>
<source><![CDATA[N Engl J Med]]></source>
<year>2020</year>
<volume>382</volume>
<page-range>2184-5</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="">
<collab>World Health Organization (WHO)</collab>
<article-title xml:lang=""><![CDATA[Coronavirus disease 2019 (COVID-19) Situation Report -51]]></article-title>
<source><![CDATA[]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<collab>World Health Organization (WHO)</collab>
<article-title xml:lang=""><![CDATA[Coronavirus disease 2019 (COVID-19) Situation Report -101]]></article-title>
<source><![CDATA[]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<collab>National Institutes of Health (NIH)</collab>
<article-title xml:lang=""><![CDATA[COVID-19 Treatment Guidelines Panel. Coronavirus Diseases 2019 (COVID-19)]]></article-title>
<source><![CDATA[Treatment Guidelines]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wilder-Smith]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Freedman]]></surname>
<given-names><![CDATA[DO]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Isolation, quarantine, social distancing and community containment: pivotal role for old-style public health measures in the novel coronavirus (2019-nCoV) outbreak]]></article-title>
<source><![CDATA[J Travel Med]]></source>
<year>2020</year>
<volume>27</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>taaa020</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[De Quadros]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vacunas: prevención de enfermedades protección de la salud]]></article-title>
<source><![CDATA[Rev Inst Med Trop S Paulo]]></source>
<year>2004</year>
<volume>46</volume>
<numero>5</numero>
<issue>5</issue>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Uddin]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Mustafa]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Rizvi]]></surname>
<given-names><![CDATA[TA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[SARS-CoV-2/COVID-19: Viral Genomics, Epidemiology, Vaccines, and Therapeutic Interventions]]></article-title>
<source><![CDATA[Viruses]]></source>
<year>2020</year>
<volume>12</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>526</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Walls]]></surname>
<given-names><![CDATA[AC]]></given-names>
</name>
<name>
<surname><![CDATA[Park]]></surname>
<given-names><![CDATA[YJ]]></given-names>
</name>
<name>
<surname><![CDATA[Tortorici]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Structure, Function, and Antigenicity of the SARS-CoV-2 Spike Glycoprotein]]></article-title>
<source><![CDATA[Cell]]></source>
<year>2020</year>
<volume>181</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>281-92</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Le]]></surname>
<given-names><![CDATA[TT]]></given-names>
</name>
<name>
<surname><![CDATA[Andreadakis]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The COVID-19 vaccine development landscape]]></article-title>
<source><![CDATA[Nat Rev Drug Discov]]></source>
<year>2020</year>
<volume>19</volume>
<page-range>305-6</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="book">
<collab>World Health Organization (WHO)</collab>
<article-title xml:lang=""><![CDATA[DRAFT landscape of COVID-19 candidate vaccines]]></article-title>
<source><![CDATA[]]></source>
<year>2020</year>
<publisher-loc><![CDATA[EU ]]></publisher-loc>
<publisher-name><![CDATA[World Health Organization]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Research and development on therapeutic agents and vaccines for COVID-19 and related human coronavirus diseases]]></article-title>
<source><![CDATA[ACS Central Science]]></source>
<year>2020</year>
<volume>6</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>315-31</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cohen]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vaccine designers take first shots at COVID-19]]></article-title>
<source><![CDATA[Science]]></source>
<year>2020</year>
<volume>368</volume>
<numero>6486</numero>
<issue>6486</issue>
<page-range>14-6</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Padron-Regalado]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Vaccines for SARS-CoV-2: lessons from other coronavirus strains]]></article-title>
<source><![CDATA[Infect Dis Ther]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Burton]]></surname>
<given-names><![CDATA[DR]]></given-names>
</name>
<name>
<surname><![CDATA[Walker]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Rational Vaccine Design in the Time of COVID-19]]></article-title>
<source><![CDATA[Cell Host &amp; Microbe]]></source>
<year>2020</year>
<volume>27</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>695-8</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
