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Even four months after first jab antibodies generated by Covishield vaccine remain active – expert
By Rathindra Kuruwita
A significant amount of antibodies created by the Covishield COVID-19 vaccine remained even 16 weeks after receiving the first jab, Dr. Chandima Jeewandara of the Allergy, Immunology and Cell Biology Unit, Department of Immunology Molecular and Molecular Medicine of the University of Sri Jayewardenepura said yesterday.
“We studied this because it was a serious issue due to hundreds of thousands of people have not received the booster doses yet. Our research shows that a significant amount of antibodies remains in those who received the first dose. This is good news and I think we can give them the second dose. But we have to conduct tests.”
Dr. Jeewandara said they would soon release a report on antibodies that developed due to the Sputnik-V vaccine, and a similar report on the Moderna vaccine too would be released in a month or two.
Dr. Jeewandara said that 500 Sputnik-V recipients and 600 Moderna recipients were being studied.
Commenting on a recent study by the department on the development of antibodies by those given the Sinopharm vaccine where it was found that vaccine induced antibody responses in over 95% of individuals, similar to levels seen following natural COVID-19 illness, Dr. Jeewandara said that the study had addressed a key concern people had about Sinopharm.
“One of the biggest problems is that we have little data on Sinopharm. This study tries to fill that,” he said.
Dr. Jeewandara said that the university had started measuring efficacy and antibodies from vaccines since Sri Lanka started administering them. The first vaccine they started studying was Covishield, he said.
“Let me explain the process. We take a blood sample before vaccination. We do that to identify antibody levels before vaccination. In Sri Lanka most people who contract COVID19 don’t develop symptoms. So we do this as a baseline blood test. Then we get a second sample before the second jab is given and a third sample at a time the manufacturer recommends as the best time to check antibodies.”
In the case of Sinopharm, the third sample was taken two weeks after the second jab. The researchers look at the level of antibodies and T-cell response because they are the two main tools to fight or prevent the virus or prevent serious illness, he said. A person can either get antibodies from contracting the virus or through vaccination, Dr. Jeewandara said.
“These are not efficacy tests. Efficacy is measured in a controlled clinical trial and is based on how many people who got vaccinated developed the ‘outcome of interest’ (usually the disease) compared with how many people who got the placebo (dummy vaccine) developed the same outcome. What we did was to test antibodies but this hints at vaccine efficacy too. Immunity and protection tend to be similar in both tests.”
Dr. Jeewandara said that Sri Lanka was an interesting case study because most Sri Lankans were genetically similar and that one variant usually dominates the country. However, Sri Lanka used several vaccines, giving the country an excellent opportunity to find out what vaccine was best.
“We also studied Covishield and over 90% of people vaccinated with it had developed antibodies,” he said.
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486 dead, 341 missing, 171,778 displaced as at 0600hrs today [05]
The situation report issued by the Disaster Management Center at 0600hrs today [5th December] confirms that 486 persons have died and another 341 persons are missing after the devastating weather conditions in the past week.
171,778 persons have been displaced and have taken refuge at 1,231 safety centers established by the government.

News
Media slams govt.’s bid to use Emergency to silence critics
Media organisations have denounced Deputy Minister of Public Security and Parliamentary Affairs Sunil Watagala after he urged law enforcement authorities to use emergency regulations to take action against those posting allegedly defamatory content about the President and senior ministers on social media.
The Sri Lanka Working Journalists Association (SLWJA) yesterday issued a strongly worded statement condemning Watagala’s remarks, warning that they posed a direct threat to freedom of expression and media rights, particularly at a time when the country is struggling through a national disaster.
Watagala made the controversial comments on 2 December during a meeting at the Malabe Divisional Secretariat attended by government officials and Deputy Media Minister Dr. Kaushalya Ariyarathna. During the discussion, the Deputy Minister claimed that a coordinated effort was underway to spread distorted or false information about the disaster situation through physical means, social media, and even AI-generated content. He also alleged that individuals based overseas were contributing to such activity.
According to the SLWJA, Watagala went further, directing police officers present at the meeting to treat those posting such content “not merely as suspects but as offenders” and to take action against them under emergency regulations currently in force.
The SLWJA accused the government of abandoning the democratic principles it once campaigned on, noting that individuals who publicly championed free speech in the past were now attempting to clamp down on it. The association said this was not an isolated incident but part of a pattern of growing state pressure on journalists and media platforms over the past year.
It warned that attempts to criminalise commentary through emergency powers especially during a disaster constituted a grave violation of constitutional rights. The union urged the government to respect democratic freedoms and refrain from using disaster-related powers to silence criticism.
In a separate statement, Internet Media Action (IMA) also expressed “strong objection” to Watagala’s comments, describing them as a “serious threat to freedom of expression”, which it said is a fundamental right guaranteed to all Sri Lankan citizens.
The IMA said Watagala’s assertion that “malicious character assassination attacks” were being carried out against the President and others through social media or other media channels, and that such acts should attract severe punishment under emergency law, represented “an abuse of power”. The organisation also criticised the Deputy Minister’s claim that false opinions or misrepresentations whether physical, online, or generated by AI could not be permitted.
Using emergency regulations imposed for disaster management to suppress political criticism amounted to “theft of fundamental rights”, the statement said, adding that the move was aimed at deliberately restricting dissent and instilling fear among social media users.
“Criticism is not a crime,” the IMA said, warning that such rhetoric could lead to widespread intimidation and self-censorship among digital activists and ordinary citizens.
The group demanded that Watagala withdraw his statement unconditionally and insisted that freedom of expression cannot be curtailed under emergency laws or any other legal framework. It also called on the government to clarify its stance on the protection of fundamental rights amid increasing concerns from civil society.
News
Cardinal calls for compassionate Christmas amid crisis
Archbishop of Colombo, Cardinal Malcolm Ranjith, has called on Sri Lankans to observe this Christmas with compassion and restraint, as the nation continues to recover from one of its worst natural disasters in recent memory.
In his message, the Colombo Archbishop has highlighted the scale of the crisis, noting that more than 1.5 million people have been displaced, while an “uncounted number” remain buried under debris in the hill country following landslides and severe flooding.
“It is a most painful situation,”
he has written acknowledging the difficulty of celebrating a season traditionally associated with joy while thousands are mourning lost loved ones, living in refugee centres, or left with nothing but the clothes they were wearing.
The Cardinal has urged the faithful to temper excessive celebrations and extravagance, instead focusing on helping those affected. “Celebrate, by all means, yes, but make it a moment of spiritual happiness and concern for the needs of those who suffer,” he said. “Assist as much as possible those who lost their loved ones, their homes, and their belongings.”
He has called for a Christmas marked by love, sharing, and solidarity, describing it as an opportunity to make the season “a deeply spiritual and joyful experience.”
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