Abstract submission deadline: 12th July 2021 - Extended to 14th July 2021,12 midnight UK timeISSAD Scientific Committee invites delegates to submit abstracts for oral or poster presentation at ISSAD-2021. Please note that all travel scholarships will be determined competitively based on abstracts. Note that travel may not be possible depending on COVID-19 restrictions. Once reviewed by the International Scientific Committee (ISC), feedback will be given on the acceptance of abstracts by Tuesday 3rd August 2021. Presentations of original data not yet published or presented elsewhere, prior to ISSAD 2021 is highly recommended. We will also consider abstracts related to 2020 publications, contingent on compliance with applicable copyright laws with publishing journals. Authors are responsible for ensuring that there is no infringement of copyright.Please specify which of the 8 tracks you wish to be considered for. You may indicate more than one track. Abstract Tracks:1. Epidemiology and burden 2. Micro and molecular 3. Immunity and sero epi 4. Vaccines and confidence 5. Implementation, integration, M&E6. Parent and societal7. Economics8. Hot topicsYou may also indicate your preference for oral or poster, but fewer orals will be selected so you may be offered the opportunity for a poster instead. For more information, please contact Mita Vaghji at issad@lshtm.ac.uk. Abstract format:A Microsoft Word abstract template is available below. Please use this template for abstract preparationAbstract title (limited to 30 words)Authors: Presenting author’s contact details (full first and family name, identification number, affiliation details, e-mail) Add co-authors (full first and family name, affiliation details, e-mail) Abstract text: limited to 300 words (please check the word count using word processing software); presented in clear English. Use sub-sections for your abstract text: introduction, methods, results, conclusionAll abbreviations and acronyms must be defined on first use. Use generic names of drugs One table or one graph can be added per abstract. Such table or graph counts for 50 wordsAbstracts may be selected for oral presentation (15 minutes talk including questions), “elevator talk” (3 minutes talk with no follow-up question) or poster. Please indicate if you prefer one or several of these formats at the time of submissionAbstract submission will close on 12th July 2021, 12 midnight UK time - Extended for 48hrs until 14th July 2021.Note:The abstract must contain results. All abbreviations and acronyms must be defined on first use.Abstracts, not fulfilling requirements will not be considered.