Delayed doses of AstraZeneca jab boost immunity: study

Agence France-Presse

<div class="embed-wrap"><figure data-feedback="fb:likes,fb:comments"><img src="http://sa.kapamilya.com/absnews/abscbnnews/media/2021/reuters/06/28/climate-change-talks.jpg"/><figcaption>A vial of AstraZeneca coronavirus vaccine is seen at a vaccination center in Westfield Stratford City shopping center, amid the outbreak of coronavirus disease (COVID-19), in London, Britain, February 18, 2021. <em>Henry Nicholls, Reuters/File</em></figcaption></figure></div><p>LONDON — Delayed second and third doses of the AstraZeneca vaccine boost immunity against COVID-19, a study by Oxford University, which developed the jab with the British-Swedish firm, said on Monday.</p><p>An interval of up to 45 weeks between the first and second dose of the AstraZeneca vaccine led to an enhanced immune response, rather than compromising immunity, the study said.</p><p>Giving a third dose of the jab more than six months after the second dose also leads to a &quot;substantial increase&quot; in antibodies and induces a &quot;strong boost&quot; to subjects&#x27; immune response, said the pre-print study, meaning that it has yet to be peer-reviewed.</p><p>&quot;This should come as reassuring news to countries with lower supplies of the vaccine, who may be concerned about delays in providing second doses to their populations,&quot; said lead investigator of the Oxford trial, Andrew Pollard.</p><p>&quot;There is an excellent response to a second dose, even after a 10-month delay from the first.&quot;</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/overseas/06/15/21/astrazeneca-hits-snag-in-covid-19-drug-development">AstraZeneca hits snag in COVID-19 drug development</a></li></ul><p>The researchers said the results for a delayed AstraZeneca third dose were positive, particularly as nations with advanced vaccination programs consider whether third booster shots will be required to prolong immunity.</p><p>&quot;It is not known if booster jabs will be needed due to waning immunity or to augment immunity against variants of concern,&quot; said the study&#x27;s lead senior author, Teresa Lambe.</p><p>She explained the research showed the AstraZeneca jab &quot;is well tolerated and significantly boosts the antibody response.&quot; </p><p>Lambe added results were encouraging &quot;if we find that a third dose is needed&quot;.</p><p>The development of the jab, which is being administered in 160 countries, has been hailed as a milestone in efforts against the pandemic because of its relatively low cost and ease of transportation.</p><p>However, confidence in the jab, as with the vaccine developed by the US firm Johnson &amp; Johnson, has been hampered by concerns over links to very rare but serious blood clots in a handful of cases.</p><ul class="op-related-articles">	<li><a href="https://news.abs-cbn.com/overseas/06/28/21/astrazeneca-on-track-meet-southeast-asia-order">AstraZeneca says on track to meet Southeast Asia vaccine orders</a></li></ul><p>A number of nations have suspended the use of the vaccine as a result or restricted its use by younger groups who are less at risk from COVID.</p><p>The Oxford study indicated that side effects from the vaccine, in general, were &quot;well-tolerated&quot; with &quot;lower incidents of side effects after second and third doses than after first doses&quot;. </p><div><strong>RELATED VIDEO</strong></div><figure class="op-interactive"><iframe allow="autoplay; fullscreen" frameBorder="0" height="100%" id="ivsplayer01" scrolling="no" src="https://player.ivideosmart.com/ivsplayer/v4/dist/html/iframe-src.html?iframeid=ivsplayer01&amp;key=e8c22c015ca9eafa76f1e3edfa03c603&amp;spid=3001339&amp;vid=1716084" width="100%"></iframe></figure><div class="iwantbar">Watch more in <a href="//www.iwantv.com.ph/">iWantv</a> or <a href="//tfc.tv/">TFC.tv</a></div><div><br/> </div>

<p>LONDON — Delayed second and third doses of the AstraZeneca vaccine boost immunity against COVID-19, a study by Oxford University, which developed the jab with the British-Swedish firm, said on Monday.</p>

LONDON — Delayed second and third doses of the AstraZeneca vaccine boost immunity against COVID-19, a study by Oxford University, which developed the jab with the British-Swedish firm, said on Monday.

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Delayed doses of AstraZeneca jab boost immunity: study

Delayed doses of AstraZeneca jab boost immunity: study

Agence France-Presse

Published Jun 28, 2021 10:54 PM PHT

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