The 71-year-old wife of the president tested negative Monday but developed “cold-like symptoms late in the evening,” her communications director Elizabeth Alexander said in a statement.

Alexander said a subsequent rapid antigen test was negative, but a more detailed PCR test was positive.

The first lady has been prescribed a course of the oral antiviral pill Paxlovid and will isolate for at least five days.

She “is double-vaccinated, twice boosted, and only experiencing mild symptoms,” Alexander added.

Jill Biden tested positive while on holiday in South Carolina, where she is staying at a private residence, and will return to the White House after two consecutive negative tests, her aide said.

President Biden, who turns 80 in November, has recently recovered from two separate bouts of the coronavirus.

He first tested positive on July 21 and continued to carry out his duties while isolating at the White House.

After four days of negative tests, he again received a positive result on July 30 and entered isolation a second time.

Tinubu disclosed this on Thursday at the public presentation of Aisha’s biography, “Aisha Buhari: Being different,” written by the Senior Special Assistant to the President on Administration and Women Affairs, Dr Hajo Sani.

Tinubu, who was the chairman of the occasion, said, “Given the First Lady’s achievements, no one can reasonably question the role of a First Lady any longer.

“Remember there were those who argued that the constitution does not assign an official role to the First Lady.

“Because of Dr. Mrs. Aisha Buhari, their concerns have been forever laid to rest.

“The First Lady has played an uplifting, unifying role both in symbol and substance.

“She has been a voice of conscience calling us to be our better selves for the good of the nation and for the betterment of the weakest, most vulnerable among us.

“As such, she has been a strong pillar of support not only to the President but also to the Nigerian people whom they both serve with such patriotic commitment and high purpose.”

The couple, on their separate Twitter handles, expressed happiness and thank Almighty Allah for sustaining their marriage which is blessed with children.

Buhari on his verified handle said, “Today on our 30th wedding anniversary, I pray for Allah’s continued peace and blessings in our home and family.”

The first lady, Aisha Buhari, on her handle, posted a slideshow of photographs over years, with the caption, “Alhamdulillah for 30 years of togetherness.”

Meanwhile, other Twitter users and other online platforms joined the president and his wife on their celebration.

This is coming after the police summoned Timi Dakolo and his wife, Busola to Abuja on Tuesday over alleged falsehood, mischief and threat to life and criminal conspiracy.

The first lady reacted to this on her Twitter handle by tweeting “ATTENTION : INSPECTOR GENERAL OF POLICE #SayNoToRape #JusticeForRapeVictims #SayNoToIntimidation,”

She said this would take effect immediately in order to resolve the issue of the title of wives of governors .

Mrs Buhari disclosed her new official title at the presentation of awards to the former and current wives of Governors of the 36 states.

She said “When my husband was newly elected, I personally chose to be called the wife of the President. But I realised that it causes confusion from the state as to whether the wives of state governors are to be addressed as the first ladies or wives of the governors. So, forgive me for confusing you from the beginning, but now I chose to be called the first lady.”

Three months ago, Rivlin underwent a lung transplant. Rivlin suffered from pulmonary fibrosis and required the constant use of a portable oxygen tank, which was attached to her even during official ceremonies she attended with her husband.

LIsrael’s Prime Minister, Benjamin Netanyahu, in a statement said “Together with all the citizens of Israel, my wife Sara and I express deep sorrow at the passing of the wife of the president, Nehama Rivlin. We all prayed for her healing during the recent period in which she fought bravely and with all her might for her life. We extend our heartfelt condolences to the president and to all his family. May her memory be a blessing”.