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Rachel V Thomas

Ebola Bundibugyo Virus: American Health Worker Had 10x Higher Viral Load In Throat Than Blood

Even as the <span><a href="https://www.healthandme.com/health/ebola">Ebola</a></span> outbreak caused by the rare Bundibugyo <span><a href="https://www.healthandme.com/health/ebola">Ebola</a> virus</span> continues to spread, a new case study has revealed a striking finding: the lesser-known virus can remain at very high levels in a patient’s throat.

Ebola viruses are primarily known to attack the vascular system, damaging blood vessel integrity and disrupting the body’s ability to clot. This can lead to severe fluid loss, organ failure and, in some cases, internal or external bleeding.

However, a case study of a 39-year-old American healthcare worker infected with Bundibugyo Ebola virus in the Democratic Republic of the Congo (DRC) found that his throat carried more than 10 times as much viral RNA as his blood.

The patient was later medically evacuated to Germany, where he received experimental treatment at a high-level isolation unit in Berlin.

<h2>Throat Carried 10 Times More Virus</h2>

<ul><li>Throat: About 90 million viral RNA copies/mL</li><li>Blood plasma: About 7 million copies/mL</li><li>Difference: The throat had more than 10 times the viral RNA found in blood.</li></ul>

The case was published in Nature Medicine by researchers from Charité – Universitätsmedizin Berlin, with collaborators including the CDC, US Department of State, Robert Koch Institute, Emory University and Congo’s Institut National de Recherche Biomédicale.

The healthcare worker had performed an ultrasound nine days before symptoms began.

Eight days before symptoms, he performed two surgeries using standard personal protective equipment and reported no specific high-risk exposure.

He voluntarily isolated himself when symptoms began. His early symptoms included:

<ul><li>Severe muscle pain and malaise</li><li>38.9°C fever despite acetaminophen</li><li>Positive pan-Ebola PCR on plasma by day two</li></ul>

By day three, he developed abdominal pain, vomiting, confusion and orthostatic symptoms.

<h2>Experimental Treatment Was Given</h2>

Bundibugyo Ebola virus has so far caused three recorded outbreaks, but there are currently no licensed vaccines or specific treatments for the disease.

The patient had received a dose of rVSV-ZEBOV 41 months earlier, but that vaccine targets the Zaire species.

He received the investigational antibody cocktail MBP134 on day four, along with a 200 mg loading dose of remdesivir off-label.

He reached Berlin on day five with thrombocytopenia, lymphopenia and elevated liver enzymes.

<h2>Viral RNA Cleared From Most Samples</h2>

By day 13, viral RNA was below detection levels in his:

<ul><li>Plasma</li><li>Throat</li><li>Urine</li><li>Stool</li></ul>

However, the virus was still detected in semen on day 20 but was gone by day 25. Three laboratories failed to culture live virus from throat, plasma or semen samples, the report said.

The researchers cautioned that this cannot be directly attributed to MBP134 because pre-treatment culture data were unavailable. The patient was discharged 22 days after symptom onset.

<h2>His Immune System Also Responded</h2>

Researchers found rising antibodies against the virus between days five and six, along with virus-specific IgM and IgA, suggesting that his own immune system mounted a response despite receiving monoclonal antibodies.

However, the researchers stressed that the case does not prove MBP134, remdesivir or their combination works. Larger studies are needed.

Congo declared the outbreak in Ituri Province on May 15, 2026, followed by a WHO public health emergency of international concern two days later.

<ul><li>5,514 confirmed cases</li><li>2,642 deaths</li><li>4,607 cases and 2,065 deaths in Ituri</li></ul>The WHO has described it as the largest Ebola outbreak ever reported in Congo. Uganda, which reported a small number of travel-linked cases, declared its outbreak over in late July.

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Ebola Viral Load In Throat

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Ebola American Health Worker

Ebola MBP134

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Even as the Ebola outbreak caused by the rare Bundibugyo Ebola virus continues to spread, a new case study has revealed a striking finding: the lesser-known virus can remain at very high levels in a patient’s throat.Ebola viruses are primarily known to attack the vascular system, damaging blood vessel integrity and disrupting the body’s ability to clot. This can lead to severe fluid loss, organ failure and, in some cases, internal or external bleeding.However, a case study of a 39-year-old American healthcare worker infected with Bundibugyo Ebola virus in the Democratic Republic of the Congo (DRC) found that his throat carried more than 10 times as much viral RNA as his blood.The patient was later medically evacuated to Germany, where he received experimental treatment at a high-level isolation unit in Berlin.Throat Carried 10 Times More VirusOn day five of illness, testing showed:Throat: About 90 million viral RNA copies/mLBlood plasma: About 7 million copies/mLDifference: The throat had more than 10 times the viral RNA found in blood.The case was published in Nature Medicine by researchers from Charité – Universitätsmedizin Berlin, with collaborators including the CDC, US Department of State, Robert Koch Institute, Emory University and Congo’s Institut National de Recherche Biomédicale.How Was He Exposed?The healthcare worker had performed an ultrasound nine days before symptoms began.Eight days before symptoms, he performed two surgeries using standard personal protective equipment and reported no specific high-risk exposure.He voluntarily isolated himself when symptoms began. His early symptoms included:Severe muscle pain and malaise38.9°C fever despite acetaminophenPositive pan-Ebola PCR on plasma by day twoBy day three, he developed abdominal pain, vomiting, confusion and orthostatic symptoms.Experimental Treatment Was GivenBundibugyo Ebola virus has so far caused three recorded outbreaks, but there are currently no licensed vaccines or specific treatments for the disease.The patient had received a dose of rVSV-ZEBOV 41 months earlier, but that vaccine targets the Zaire species.He received the investigational antibody cocktail MBP134 on day four, along with a 200 mg loading dose of remdesivir off-label.He reached Berlin on day five with thrombocytopenia, lymphopenia and elevated liver enzymes.Viral RNA Cleared From Most SamplesBy day 13, viral RNA was below detection levels in his:PlasmaThroatUrineStoolHowever, the virus was still detected in semen on day 20 but was gone by day 25. Three laboratories failed to culture live virus from throat, plasma or semen samples, the report said.The researchers cautioned that this cannot be directly attributed to MBP134 because pre-treatment culture data were unavailable. The patient was discharged 22 days after symptom onset.His Immune System Also RespondedResearchers found rising antibodies against the virus between days five and six, along with virus-specific IgM and IgA, suggesting that his own immune system mounted a response despite receiving monoclonal antibodies.However, the researchers stressed that the case does not prove MBP134, remdesivir or their combination works. Larger studies are needed.Congo Ebola OutbreakCongo declared the outbreak in Ituri Province on May 15, 2026, followed by a WHO public health emergency of international concern two days later.As of August 22, the ECDC reported:5,514 confirmed cases2,642 deaths4,607 cases and 2,065 deaths in IturiThe WHO has described it as the largest Ebola outbreak ever reported in Congo. Uganda, which reported a small number of travel-linked cases, declared its outbreak over in late July.

ebola bundibugyo virus: american health worker had 10x higher viral load in throat than blood

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