Prof. Dr. Sohel Mahmud Arafat, chairman of the Medicine Department of BSMMU, has been made the chief of the nine-member medical team.
The medical board is now conducting various medical tests of Bisnu .
However, no specific disease has been diagnosed yet.
Earlier, Bisnu was brought to Dhaka by an air ambulance from Bagerhat and then admitted to BSMMU in the capital on March 16.
Also read: Ministry monitoring UNB reporter who fell sick after taking Covid vaccine
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.
On March 11, Deputy Commissioner of Bagerhat ANM Faizul Haque visited Bisnu at his home and enquired about his health condition.
Also read: Covid situation worsening in Bangladesh, another 26 die in 24 hours
Covid-19 situation
Amid a worrying surge in Covid-19 infections, Bangladesh recorded 22 more deaths and 2,172 new cases in the last 24 hours until Sunday morning.
The infection rate rose to 10.29 percent which was 09.39 percent a day earlier.
The latest figures have pushed the Covid-19 fatalities to 8,690 and the total infections to 570,878, according to a handout by the Directorate General of Health Services (DGHS).
Meanwhile, the mortality rate stood at 1.52 percent for the third consecutive day after remaining static at 1.53 percent for the past week.
The Covid-19 infection rate had come down to below 5 percent on January 19 last. It even fell below 3 percent but soared again on February 9.
So far, 522,405 patients (91.51 percent) have recovered, including 1,687 in the last 24 hours, according to DGHS.
Bangladesh reported its first cases on March 8, 2020 and the first death on March 18 the same year. Health authorities have so far tested 4,409,119 samples, including 21,108 in the past 24 hours.
Amid spike in infections, the government has taken a tougher stance to fight Covid-19 transmission. The Health Ministry sent letters to districts, directing the officials concerned to impose fines on people flouting Covid protocols.
Vaccination drive in Bangladesh
Bangladesh started its countrywide Covid-19 vaccination drive on February 7.
By Sunday, 4,840,969 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.
The government is providing the vaccine for free. It signed an agreement with India's Serum Institute for acquiring 30 million doses.
Serum will provide five million doses every month between January and June. For now, 40 years aged or above can register for getting the jab at www.surokkha.gov.bd.
Health Minister Maleque said the age limit for getting the vaccine will be revised when more doses will be available in the country.