He was brought to Dhaka by an air ambulance around 10:30 am from Sheikh Helaluddin Stadium and then admitted to Bangabandhu Sheikh Mujib Medical University (BSMMU) in the capital.
Bisnu developed various symptoms, including high fever, shortness of breath, headache and chest pain, after receiving the first dose of coronavirus vaccine on February 7 at Bagerhat Sadar Hospital.
He was earlier treated at Bagerhat Sadar Hospital and then shifted to Khulna Medical College Hospital (KMCH).
An expert medical board, formed to treat him, conducted various tests but failed to diagnose any specific disease.
Later, Bisnu took treatment at home under the supervision of the health department.
Also read: Ministry monitoring UNB reporter who fell sick after taking Covid vaccine
On March 11, Deputy Commissioner of Bagerhat ANM Faizul Haque visited Bisnu at his home and enquired about his health condition.
During the visit, he also said that the administration would ensure better medical treatment for the journalist.
Covid-19 situation in Bangladesh
Twenty-six more deaths and 1,719 new cases were reported in Bangladesh in 24 hours till Tuesday morning as the Coronavirus infection cases keep rising in the country.
Bangladesh witnessed 26 deaths for the 2nd consecutive day after the recent surge in infections.
With the latest figures, the Covid-19 fatalities climbed to 8,597 while the total infections to 560,887, according to a handout of the Directorate General of Health Services (DGHS).
The daily infection rate slightly fell to 8.29 percent from 9.48 percent on Monday.
But the mortality rate remained static at 1.53 percent for the last four days which was 1.54 percent in the past few weeks, the DGHS said.
Also read: Covid situation worsening in Bangladesh, another 26 die in 24 hours
The virus infection rate had come down to below 5% on January 19 last. It even had come down below 3 percent. However, the infection rate soared again on February 9 as it increased to 5.13%.
The infection rate was 5.98% on February 10 while 5.82 percent on February 11, 6.62% on February 12 and 6.26% on February 13.
Besides, 1,352 people recovered from the virus infections during the period. So far, 514,479 patients (91.73 percent) have recovered, according to the DGHS.
Bangladesh reported its first cases on March 8, 2020 and the first death on March 18 in the same year.
Authorities have so far tested 4,303,994 samples, including 20,748 in the past 24 hours.
Vaccination drive in Bangladesh
Bangladesh launched its nationwide Covid-19 vaccination drive on February 7.
By Sunday, 4,398,094 people received the first dose of the Oxford-AstraZeneca vaccine. The second dose has to be taken between 8 and 12 weeks of the first one.
Also read: Govt to get tougher on curbing Covid-19 transmission: Health Minister
The government is providing the vaccine for free. It signed an agreement with India's Serum Institute for acquiring 30 million doses of the vaccine.
The institute will provide five million doses every month between January and June. Those who are 40 or above can register for getting the jab at www.surokkha.gov.bd as the on-spot registration system has been revoked.
Health Minister Zahid Maleque has said that the age limit for getting the vaccine will be revised when more doses are available in the country.