HIV+ patient identified as longest case of Covid; The Lancet records 776 days of infection

New Delhi: As per a study published in The Lancet Microbe, the longest known patient of Covid-19 has been living with the infection for over two years now. The patient is also struggling with uncontrolled HIV, and the report highlights challenges involved with infection management in immunocompromised people. The same also raises concerns about how such cases can contribute to a surge in cases of new variants.

Over 2 years of being Covid positive

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The patient, who had not been receiving antiretroviral therapy, was also positive for HIV-1 infection. The patient had contracted COVID-19 in May 2020. Since then, researchers collected eight samples from March 2021 to July 2022. This confirmed that COVID had been in his body for over 750 days. Samples of genetic sequencing showed that the virus was from the B.1 lineage and over the years, had mutated several times, 68 consensus and 67 sub-consensus changes. The rate of viral evolution was also similar to the pattern seen in community-level infections.

What the Findings Showed

Among the most striking observations was the presence of 10 spike protein mutations that matched those later seen in the Omicron variant. Nine of these were detected before Omicron was formally identified in late 2021. However, researchers found no evidence that the virus from this patient had spread to others.

Study co-author Dr. William Hanage, associate professor of epidemiology at Harvard University, explained that persistent infections do not usually lead to the emergence of highly transmissible variants. “Adapting to replicate successfully in one person is different from adapting to spread widely between people,” he noted. Still, he emphasised that long-term infections increase the chances of unusual viral adaptations, making effective treatment critical for both individual patients and the wider community.

Implications for Public Health

The study illustrates how prolonged infections in immunocompromised individuals may act as incubators for viral mutations, even if only rarely leading to global variants. Researchers stressed the importance of continuous monitoring, especially in patients whose immune systems are weakened by conditions like untreated HIV. In this case, the patient persistently had lower levels of CD4 counts and did not receive antiviral therapy for SARS-CoV-2 or HIV.

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Why does COVID-19 continue to be a threat?

Doctors say that while even the most persistent forms of Covid will not give rise to new mutants, they continue to pose serious health risks. In this case, Omicron highlights how the virus can evolve even after the pandemic is over. Researchers concluded that it is essential to ensure timely and regular treatment for immunocompromised patients to ensure longevity.