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Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/head.php
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Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/head.php
Line: 60
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/head.php
Line Number: 61
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/head.php
Line: 61
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/head.php
Line Number: 61
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/head.php
Line: 61
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/head.php
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Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/head.php
Line: 64
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/head.php
Line Number: 64
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/head.php
Line: 64
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
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Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 59
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/header.php
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File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 59
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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File: /home/vaccinescongress/public_html/application/controllers/frontend/ScientificSessions.php
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Function: view
File: /home/vaccinescongress/public_html/application/controllers/frontend/ScientificSessions.php
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/header.php
Line Number: 59
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 59
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/header.php
Line Number: 61
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 61
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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File: /home/vaccinescongress/public_html/application/controllers/frontend/ScientificSessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/header.php
Line Number: 61
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File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 61
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
File: /home/vaccinescongress/public_html/application/controllers/frontend/ScientificSessions.php
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Function: view
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/header.php
Line Number: 62
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 62
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
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Function: view
File: /home/vaccinescongress/public_html/application/controllers/frontend/ScientificSessions.php
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Function: index
File: /home/vaccinescongress/public_html/index.php
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Function: require_once
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: frontend/header.php
Line Number: 62
Backtrace:
File: /home/vaccinescongress/public_html/application/views/frontend/header.php
Line: 62
Function: _error_handler
File: /home/vaccinescongress/public_html/application/views/frontend/scientific-sessions.php
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Function: view
File: /home/vaccinescongress/public_html/application/controllers/frontend/ScientificSessions.php
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Function: view
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Line: 48
Function: index
File: /home/vaccinescongress/public_html/index.php
Line: 315
Function: require_once
With their rapid development and scalable design, mRNA and DNA-based vaccines have reshaped the field of vaccinology. These nucleic acid platforms instruct cells to produce antigenic proteins, prompting strong immune responses without using live pathogens. Their flexibility allows quick updates for evolving threats, as seen with COVID-19 vaccines. Delivery systems like lipid nanoparticles and electroporation are continuously improving their stability and efficacy. Safety profiles, low production costs, and adaptability make these vaccines attractive for global deployment. As research expands into oncology and rare diseases, mRNA and DNA-Based Vaccines are establishing themselves as pivotal technologies in both preventive and therapeutic settings.