News
Delayed second jab may have done you good
Covishield vaccine induces immunity for at least one year following a single dose
Strong immune responses following either a late second dose or a third dose
by Emme Haddon
In early March 2021, I received my first shot of Covishield but began to get a little worried when the recommended three-month time frame had passed for the second dose with no sign of the promised shipment from India. Finally, in the first week of August, some months later, after what seemed like an interminable wait, I was fortunate enough to secure my second dose of Covishield, along with 490,000 or so others.
The findings of a study of Vaxzevria, the European brand name for the UK’s AstraZeneca vaccine of which the Indian-manufactured Covishield is biologically identical, from the Oxford-led COV001 and COV002 trials by researchers at the University of Oxford, released on June 28, 2021 on the pre-preprint server of the Lancet, demonstrated that antibody levels remain elevated from baseline for at least one year following a single dose.
Furthermore, a 45-week dosing interval between the first and second dose of Covishield, resulted in an 18-fold increase in antibody response, measured 28 days after the second dose. Antibody titers (test determining level of antibodiess in the blood) were four times higher than with a 12-week interval, demonstrating that a longer dosing interval is not detrimental but can derive stronger immunity. The analysis included volunteers aged 18 to 55 years who were enrolled in COV001 and COV002 trials and had received either a single dose or two doses of COVID-19 Vaccine AstraZeneca.
In addition, a third dose of Vaxzevria given at least sixmonths after a second dose, boosted antibody levels sixfold, maintained T cell response and also resulted in higher neutralising activity against the Alpha (B.1.1.7, ‘Kent’), Beta (B.1.351, ‘South African’) and Delta (B.1.617.2, ‘Indian’) variants. Both the late second dose and the third dose of Vaxzevria were less reactogenic than the first dose.
It seems that those of us who patiently endured a five-month wait for their second dose of Covishield, may in fact, be better protected than those who, by whatever means they felt necessary, managed to secure their second dose in the previously recommended three-month dosing interval, before supplies ran out. As the old adage goes: good things come to those who wait springs to mind!
The release of the findings of a second study on July 28. 2021, by researchers from the University of Oxford, concluded that the risk of the rare blood clotting thrombocytopenia, venous thromboembolism and arterial thromboembolism after receiving first doses of AstraZeneca or Pfizer COVID-19 jabs is far lower than from the actual virus.
Rates of venous thromboembolism were eight times higher after a diagnosis of COVID-19 infection compared with the expected rate. Many developed countries limited AstraZeneca’s use to older adults because of concerns about an elevated risk of blood clots affecting the younger population. These findings should allay any fears about the vaccine’s safety.
Results from the Canadian Immunization Research Network with support from the Public Health Agency of Canada and the Canadian Institutes of Health Research, published as a pre-print on July 23, 2021, showed that one dose of Vaxzevria (Covishield) was 82% effective against Beta/Gamma and 87% and 90 % effective against the Delta (B.617.2, ‘Indian’) and Alpha (B.1.1.7, ‘Kent’) variants’ hospitalisation or death.
Research into the coronavirus is on-going and it important to ensure that officials keep abreast of new developments and plan accordingly. In countries such as Sri Lanka with limited resources, hard hit economically by Covid-19, where the majority of those under the age of 30 have yet to receive a first vaccine, the findings that Covishield’s antibody levels remain elevated from baseline for at least one year following a single dose, with increased immunity provided as a result of a longer dosing interval are potentially game-changing.
The Delta virus variant has changed the shape of the pandemic. At a time when the vaccination program is struggling to keep up with rapid transmission of the Delta variant, any Covishield vaccines kept aside for second doses, might be better utilised now as first doses to prevent hospitalizations and deaths in those higher risk as yet unvaccinated groups.
Latest News
Advisory for Severe Lightning for the Western and Sabaragamuwa provinces and Galle and Matara districts
Advisory for Severe Lightning
Issued by the Natural Hazards Early Warning Centre at 12.00 noon 07 February 2026 valid for the period until 11.00 p.m. 07 February 2026
Thundershowers accompanied with severe lightning are likely to occur at some places in the Western and Sabaragamuwa province and in Galle and Matara districts.
There may be temporary localized strong winds during thundershowers.
The general public is kindly requested to take adequate precautions to minimize damages caused by lightning activity.
ACTION REQUIRED:
The Department of Meteorology advises that people should:
Seek shelter, preferably indoors and never under trees.
Avoid open areas such as paddy fields, tea plantations and open water bodies during thunderstorms.
Avoid using wired telephones and connected electric appliances during thunderstorms.
Avoid using open vehicles, such as bicycles, tractors and boats etc.
Beware of fallen trees and power lines.
For emergency assistance contact the local disaster management authorities.
News
INS GHARIAL departs island
The Indian Naval Ship (INS) GHARIAL which made a port call in Colombo, departed the island on 06 Feb 26.
The Sri Lanka Navy bade a customary farewell to the departing ship at the Port of Colombo, following naval traditions.
During the ship’s port call, the crew took a sightseeing tour of key attractions in Colombo.
The visit also featured the handover of ten temporary Bailey Bridges, which were brought by INS GHARIAL, in coordination with the High Commission of India in Sri Lanka.
News
Stop the collection of funds from parents at school level for Smart Boards — PM
Prime Minister Dr. Harini Amarasuriya stated that the Ministry of Education has already commenced the distribution of Smart Boards required for the new education reforms, and that the collection of funds from parents at school level for this purpose must be stopped immediately. She further emphasized that no decision has been taken to curtail free education or to close the Jayewardenepura Faculty of Dental Sciences.
The Prime Minister made these remarks in response to a question raised in Parliament on Thursday [05th February] by the Leader of the Opposition, Sajith Premadasa.
Elaborating further, the Prime Minister stated,
“Although the Leader of the Opposition has not traditionally upheld free education as a policy, I appreciate your stance on the matter at this juncture. However, I urge that questions should not be raised based on social media content or unverified rumours in Parliament. No decision has been taken to curtail free education or to close the Jayawardenepura Faculty of Dental Sciences. The Medical Faculty of the Wickramarachchi University of Indigenous Medicine had commenced operations without regulatory approval and had introduced course work, resulting in students being placed in a vulnerable situation. Necessary action is currently being taken based on the recommendations of a report submitted by an expert committee appointed to examine the issue. This this is not a political decision, but one guided by expert opinion”.
“Arrangements are underway to distribute the required Smart Boards to schools during this year, and there is no need to collect funds from parents for this purpose. If any such collections are taking place, they must be stopped immediately. The Secretary to the Ministry of Education has already issued a directive instructing schools not to collect funds from parents”.
“The subject Information Technology will not be taught as a separate subject for Grades 1 to 5. However, recognizing the need to prepare students for a globally advancing technological world, discussions have been initiated based on expert advice on how to provide age-appropriate technological awareness to students. Decisions will be made after carefully considering child protection concerns and expert recommendations. The curriculum-related decisions will not be made politically, but by subject experts.
Based on the requests made by the universities and higher education institutions recruitment for essential academic vacancies is currently being carried out under the Cabinet approval. Although thirty years have passed since the establishment of the teacher service, further measures are required to enhance its quality. Existing issues relating to teacher promotions, considering the practical difficulties in evaluation processes and non-compliance with service minute provisions are being addressed alongside other challenges. The government is presently focused on formulating a systematic plan to ensure quality education.”
Responding to a question raised by the Member of Parliament Kader Mastan, the Prime Minister stated,
“Several programmes have been introduced based on government policy decisions to fulfill the basic needs of schoolchildren. These include the provision of school textbooks, uniforms, and the “Suraksha” health insurance scheme. Additionally, voucher schemes have been introduced to support the purchase of sanitary products for girls in Grades 6 to 13. Midday meals are also being provided for primary school students, and financial assistance is extended to students who pass the Grade 5 Scholarship Examination but do not receive bursaries. The Ministry of Education is in the process of gathering further information with the intention of expanding these programmes”.
The Prime Minister also announced that the 2025 G.C.E. Ordinary Level Examination is scheduled to be held from February 17 to 26. Although this period coincides with the observance of Ramadan, relevant authorities have confirmed that it will not pose an obstacle to the conduct of the examination. Furthermore, it has been decided to hold the Grade 5 Scholarship Examination and the G.C.E. Advanced Level Examination before August each year, and the G.C.E. Ordinary Level Examination in December. From 2026 onwards, efforts will be made to conduct examinations in accordance with this revised annual examination calendar.
[Prime Minister’s Media Division]
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