The coronavirus that causes Covid-19 could become endemic like HIV, the World Health Organization said on Wednesday, warning against any attempt to predict how long it would keep circulating and calling for a “massive effort” to counter it.

According to the statement of  ”Executive Director of the World Health Organization’s Health Emergencies Programme’, ‘Michael Joseph Ryan’ COVID-19 is here to stay, and it is impossible to predict that when this pandemic is supposed to control. The number of cases so far relatively is low- said Joseph Ryan”.

“I think it is important we are realistic and I don’t think anyone can predict when this disease will disappear,” he added. “I think there are no promises in this and there are no dates. This disease may settle into a long problem, or it may not be.” Ryan added.

However, the world had some control over how it coped with the disease, although this would take a “massive effort” even if a vaccine was found — a prospect he described as a “massive moonshot”.

“There is some magical thinking going on that lockdowns work perfectly and that unlocking lockdowns will go great. Both are fraught with dangers,” the Irish epidemiologist said.

More than 100 potential vaccines are being developed, including several in clinical trials, but experts have underscored the difficulties of finding vaccines that are effective against coronaviruses.

WHO Director-General Tedros Adhanom Ghebreyesus stressed it was still possible to control the virus, with effort.

“The trajectory is in our hands, and it’s everybody’s business, and we should all contribute to stopping this pandemic,” he said.

WHO epidemiologist Maria van Kerkhove also told the briefing: “We need to get into the mindset that it is going to take some time to come out of this pandemic.”

Ryan said “very significant control” of the virus was required in order to lower the assessment of risk, which he said remained high at the “national, regional and global levels”.

Governments around the world are struggling with the question of how to reopen their economies while still containing the virus, which has infected almost 4.3 million people, according to a Reuters tally, and led to over 291,000 deaths.