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Can mosquitoes spread SARS-CoV-2?

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The answer is “no,” according to Dr. Daniel Markowski, technical advisor for the American Mosquito Control Association.

“There is no evidence that mosquitoes can acquire and transmit the SARS-CoV-2 virus,” he told MNT.

In order to understand the mechanisms that prevent mosquitoes from carrying and spreading the SARS-CoV-2 virus, Dr. Markowski explained it is important to understand how mosquitoes transmit virionsTrusted Source, or viral particles.

“Typically, the mosquito must first feed on an infected host, that is circulating enough virus in their blood to have some present in the small amount taken during a mosquito’s blood meal,” he explained.

“Secondly, the virus must survive the insect’s midgut, which has a host of immune responses similar to our own. Not only must they survive inside the mosquito’s midgut, they need to replicate and ultimately bind to receptor sites on the wall of the midgut and pass through that barrier into the mosquito’s body cavity,” Dr. Markowski added.

Once inside the body cavity, Dr. Markowski explained that the virus needs to get past the mosquito’s immune system and make its way into the insect’s salivary glands, all while continuing to replicate.

“Now with the next blood meal, they can be passed to a new host while the mosquito feeds,” he continued. “As you can see, it’s a fairly long and complex journey each virus makes to go from one host to the next via a mosquito bite. And not many viruses have evolved over the millennia to successfully complete that journey, which is why many viruses such as flu, coronavirus, and monkeypox are not mosquito-borne viruses.”

In July 2022, a team of researchers including Dr. Stephen Higgs, associate vice president for research and director of the Biosecurity Research Institute at Kansas State University, published a studyTrusted Source that found that even under extreme conditions, the SARS-CoV-2 virus did not replicate in mosquitoes.

Because of this, the researchers stated, mosquitoes would be unable to transmit the virus to people even if the mosquito fed upon someone infected with the SARS-CoV-2 virus.

“We really did not expect that it would infect mosquitoes because, for whatever reason, coronaviruses just do not infect mosquitoes or other arthropods,” Dr. Higgs told us.

“What we did in our original paper was to inject SARS-CoV-2 into mosquitoes. We know that by using this approach you can sometimes infect a resistant mosquito with a virus that would not normally infect it. Even with that unnatural approach SARS-COV-2 did not infect and multiply in the mosquitoes,” he noted.

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Oyo: Tragedy As Bride-to-Be Among Four Dead in Suspected Lassa Fever Outbreak

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The Oyo State Ministry of Health has closed two hospitals in Saki West Local Government Area following a suspected outbreak of Lassa fever, which has claimed four lives.

The fatalities, confirmed by the Oyo State Rapid Response Team (RRT), include three males and a 32-year-old female who was preparing for her wedding. The closure of the hospitals aims to contain the spread of the disease and ensure thorough decontamination.

In a press statement issued by the Commissioner for Information and Orientation, Dotun Oyelade, the State Commissioner for Health, Dr. Oluwaserimi Ajetunmobi, revealed that the RRT was dispatched to Saki following distress calls from residents reporting mysterious deaths.

Findings and Immediate Actions

The RRT, comprising health officials, representatives from WHO and the Red Cross, and local health authorities, conducted a comprehensive investigation into the outbreak.

Preliminary findings suggest that an apprentice at one of the affected hospitals, who had recently returned from Iwajowa Local Government Area, might have introduced the infection.

The team disclosed that the deceased exhibited symptoms consistent with Lassa fever, such as craniofacial bleeding. The hospital owner, who was among the deceased, initially self-medicated with antimalarials and antibiotics before seeking hospital care when his condition worsened.

Containment Measures

Both the hospital where the fatalities occurred and the facility that admitted the hospital owner were shut down for decontamination.

Contact tracing efforts are ongoing, focusing on high-risk individuals who had contact with the deceased during their illness or burial.

Affected health workers were trained on Infection Prevention and Control (IPC) protocols, and public awareness campaigns were conducted to educate residents about Lassa fever.

Samples have been collected from a symptomatic individual, pending laboratory confirmation. Line-listing of contacts is underway to identify potential cases and prevent further spread.

Collaborative Efforts

The RRT also paid an advocacy visit to the Okere of Saki’s palace to brief traditional authorities on the situation. Local government officials in Saki West were engaged to coordinate containment strategies.

Reports indicate that while the outbreak initially affected Saki West, it has extended to Iwajowa and Kajola Local Government Areas.

Disease Surveillance and Notification Officers (DSNOs) in the affected LGAs have been instructed to commence preliminary containment measures as the State RRT ramps up its response.

Call for Vigilance

The Ministry of Health has urged residents to remain vigilant, report any symptoms suggestive of Lassa fever, and adhere to preventive measures.

These include proper hygiene practices, avoiding contact with rodents, and seeking medical attention promptly if symptoms arise.

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Oyo: Oseni to Launch Mobile Clinic Initiative to Revitalize Rural Healthcare

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A member representing Ibarapa East/Ido federal constituency of Oyo State at the House of Representatives, Engr. Aderemi Oseni, has announced a plan to launch a “Mobile Clinic” programme aimed at providing essential healthcare services directly to rural communities across the constituency.

Scheduled to begin in the first quarter of 2025, this initiative underscores Oseni’s commitment to expanding healthcare access, particularly for underserved populations.

Speaking on Saturday at the 10th-anniversary celebration of God’s Knot Hospital in Ologuneru, Ibadan, the lawmaker, who also chairs the House Committee on the Federal Roads Maintenance Agency (FERMA), highlighted the programme’s primary objective: bringing healthcare closer to the people.

“Every community deserves attention; healthcare should never be bound by geographical barriers,” Oseni stated.

He explained that the mobile clinics would deliver essential health check-ups, screenings, and preventive care in remote areas, allowing residents to access quality healthcare without traveling long distances.

As part of his broader healthcare agenda, Oseni informed, through a statement by his media aide, Idowu Ayodele, that he has already facilitated the construction of two fully equipped maternity centers within his constituency, both slated for commissioning before December 2024. He also disclosed plans to establish two modern general hospitals in 2025, further strengthening his commitment to building a healthier community.

The lawmaker expressed interest in collaborating with God’s Knot Hospital on the mobile clinic project, calling for partnerships to support sustainable healthcare initiatives that enhance the quality of life for vulnerable populations in the constituency.

“I resonate deeply with the mission of God’s Knot Hospital,” Oseni shared, adding that such partnerships would significantly improve healthcare in Oyo State”.

The anniversary event attracted distinguished guests, including former Ondo State Governor Dr. Olusegun Mimiko, whom Oseni commended for his contributions to healthcare, particularly through the Mother and Child Hospitals that transformed maternal and child healthcare in Ondo State.

Oseni urged philanthropists, government bodies, and international organizations to support healthcare projects like the upcoming mobile clinics, emphasising that the improvement of healthcare services is a shared responsibility.

 

 

 

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NAFDAC Shuts Maiduguri Market Over Sun-Dried Drugs After Flood

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The National Agency for Food and Drug Administration and Control (NAFDAC) has ordered the immediate closure of the Gomboru drug market in Maiduguri following severe flooding that submerged the area and contaminated the drugs sold within the market.

In a statement posted on its official X handle, NAFDAC disclosed that the decision was made after reports surfaced that contaminated drugs, which had been washed and sun-dried for resale, were being sold at the market.

“After the recent flooding in Maiduguri that submerged the Gomboru drug market where contaminated drugs were washed and sun-dried for resale, the @DGatNAFDAC ordered the immediate closure of the market to conduct a thorough shop-to-shop removal of these compromised drugs,” the agency wrote.

The flooding, which ravaged Maiduguri, was triggered by the rupture of the Alau dam on the Ngadda River, located 20 kilometers (12 miles) south of the city.

The floodwaters claimed at least 30 lives and displaced 400,000 residents, leaving large parts of the city and surrounding areas in devastation.

NAFDAC’s intervention is aimed at safeguarding public health by preventing the sale and consumption of contaminated drugs.

The agency has mobilized teams to inspect the market and ensure the removal of all compromised pharmaceutical products.

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