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Zhao Guoping: Origin tracing COVID-19 challenging task for scientists
As the COVID-19 pandemic continues to ravage the world, the puzzle of where the virus originated is attracting global attention from the science community.
To identify the origin of an unknown virus, scientists need to find out the pathogen that caused the disease and the animal carrier, that is, the natural host of the virus, according to Dr Zhao Guoping, an academician of the Chinese Academy of Sciences.
Since the outbreak of SARS, global scientists have been searching for its source. They identified SARS-CoV as the pathogen. But it was not until 2015, 13 years after the outbreak, that the natural host of SARS-CoV, Rhinolophus sinicus, was revealed.
Questions are still waiting to be answered including whether Rhinolophus sinicus is the only natural host of SARS-CoV and how the virus varied when it encountered its intermediate host, civet cats.
Tracing the origin of the virus pathogen requires scientific evidence, including the biological evidence provided by etiology, clinical medicine and epidemiology and the molecular biological evidence provided by genetic sequencing and antibody detection, according to Dr Zhao.
Scientists need to establish the connection between the two types of evidence, which is not easy, to confirm both findings before they can finally make the issue clear, he said.
The epidemiological investigation of the origin of an infectious disease usually starts from the contact history of the first infected patient, or “patient zero”, which is even more difficult to confirm.
It is challenging to trace COVID-19 patient zero as it involves a large volume of complicated data, and the early cases might include asymptomatic infections short of medical records, said Liu Peipei, an expert at the Chinese Center for Disease Control and Prevention.
Jin Qi, head of the Institute of Medical Biology at the Chinese Academy of Medical Sciences, said patient zero has not been confirmed for the 1918 influenza pandemic, AIDS or the H1N1 flu that broke out in 2009. Tracing patient zero is a multi-disciplinary problem that requires a great deal of work from the medical and scientific circles.
The novel coronavirus spread extensively around the world since late 2019 and the single “patient zeroes” is absent in most countries, the latest study by the University College London Genetics Institute has shown. -Xinhua
The Ghana Police Service has arrested three (3) suspects in connection with a case of possession of narcotic drugs and engaging in prohibited drug-related activities within the Accra metropolis.
On April 10, 2026, the Special Operations Assistant to the Inspector General of Police received intelligence that a group of individuals were planning to engage in the sale of suspected narcotic drugs at Dzorwulu in Accra.
A surveillance operation was mounted and on 11th April 2026, a Police team proceeded to the area and arrested two suspects, Bright Ayivor and Ifeanyi Ijeoba.
The suspects were found in possession of twenty-two (22) compressed substances suspected to be cocaine, which were being prepared for sale to a prospective buyer.
Further interrogation of the suspects led to the identification of a third suspect, Kwabena Botwe as a key figure in the drug trade.
A follow-up operation at Caprice resulted in his arrest after Police mounted surveillance during a planned transaction involving proceeds from the sale of the suspected drugs.
The suspect later led Police to his residence at Greda Estates, where a search resulted in the retrieval of an amount of GHc400,000 and a counting machine.
According to the police, during the operation, he attempted to bribe the arresting officers with an additional GHc420,000, which has been retained as evidence.
All the suspects are currently in Police custody assisting investigations and will be put before the court.
The Inspector General of Police (IGP), Mr. Christian Tetteh Yohuno, yesterday April 14, 2026, promoted seven officers of the Tema Regional Police Command to their next ranks for their role in a recent anti-robbery operation in Tema.
The promotions were awarded to officers who responded to a robbery attack on a Mobile Money vendor at Tema Community 5 leading to the shooting of two robbery suspects and the recovery of a firearm, ammunition, and other exhibits.
The officers promoted are Chief Inspector Enoch Nartey Nuer, Inspector Gershon Dekpey; Inspector Prince Asante; No. 45881 Sergeant Lukman Mohammed; No. 49900 Sergeant Eugene Kuudouru; No. 54157 Corporal Jerome Akator; and No. 59882 Lance Corporal Jonathan Sewurah.
The IGP, together with members of the Police Management Board (POMAB), congratulated the officers on their promotion and commended them for their courage, discipline, and commitment to duty.
The IGP urged the officers to view their promotion as a call to higher responsibility and encouraged all personnel to continue working with dedication and professionalism in the service of the nation.
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