HealthPosted 09/21/202609/21/2026 at 11:46 pm@HealthDesk To timeline

HealthPosted 09/21/202609/21/2026 at 11:46 pm@HealthDesk To timeline

Starts 03/04/1918

Health09/21/2026@HealthDesk
The CDC Reports the First AIDS Cases
Centers for Disease Control and Prevention, 1600 Clifton Road NE, Atlanta, GA 30329, United StatesCenters for Disease Control and Prevention
Starts 06/05/1981CONFIRMED 85% CONFIDENCE45.3 years agoThe MMWR issue carrying the five Los Angeles cases of Pneumocystis pneumonia is dated 5 June 1981.^[1]
The CDC's weekly report carried five cases of Pneumocystis pneumonia in previously healthy young men in Los Angeles, two of them already dead. It is the first published account of what became AIDS, four years before the virus behind it was agreed on.
0.64
Health09/20/2026@HealthDesk
MRNA Seasonal Flu Vaccine's Phase 3 Trial in Influenza, Human Reads Out
GSK…79 New Oxford Street, London, Greater London, United Kingdom
Starts 06/09/2028ESTIMATED 50% CONFIDENCEin 1.7 yearsClinicalTrials.gov^[1] lists 2028-06-09 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
GSK's phase 3 trial of MRNA Seasonal Flu Vaccine in influenza, human reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 54,000 participants. This study will compare an investigational mRNA flu vaccine with a licensed flu vaccine in adults 65 years of age and older. Participants will receive one injection and will be followed during the flu season. The study will measure prevention of laboratory-confirmed flu illness, side effects, and immune responses.
0.62
Health09/21/2026@HealthDesk
WHO Declares the West Africa Ebola Outbreak an Emergency
World Health Organization, Avenue Appia 20, 1211 Geneva, SwitzerlandWorld Health Organization
Starts 08/08/2014CONFIRMED 87% CONFIDENCE12.1 years agoThe WHO^[2] declared the outbreak a public health emergency of international concern on 8 August 2014, following the emergency committee's meeting of 6-7 August.
Eight months after the first cases in Guinea, the WHO declared the Ebola epidemic in West Africa a public health emergency of international concern. It became the largest Ebola outbreak in history: more than 28,000 cases and 11,000 deaths across Guinea, Liberia and Sierra Leone.
0.60
Infrastructure09/14/2026@BuildDesk
The US Abandons Its Secret Ice City, Camp Century
Camp Century, Greenland Ice SheetUnited States Army
Starts 12/31/1966CONFIRMED 82% CONFIDENCE59.7 years agoHappened as dated, per taskandpurpose.com^[3]: "Camp Century continued to operate as perhaps the Army's most remote outpost until 1966 when it was closed down."
The US Army shut down Camp Century, its secret nuclear-powered base carved into the Greenland ice sheet to conceal a mobile missile network under Project Iceworm, after the tunnels it depended on began collapsing.
0.60
Health09/21/2026@HealthDesk
Measles Breaks Out Across Bangladesh
Dhaka, Bangladesh
Starts 03/15/2026ESTIMATED 68% CONFIDENCE192 days agoThe source^[1] dates the start only to "mid-March 2026", so the pin takes the middle of that month and leaves the end open: the outbreak is ongoing.
A measles outbreak that began in mid-March 2026 has killed 909 people with suspected symptoms and confirmed nearly 20,000 cases, by the Directorate General of Health Services' count as of 10 September. It is still running.
0.59
Health09/21/2026@HealthDesk
The Salk Polio Vaccine Is Declared Safe and Effective
University of Michigan, Ann Arbor, MI 48109, United States
Starts 04/12/1955CONFIRMED 87% CONFIDENCE71.4 years agoThe field trial results were announced at the University of Michigan on 12 April 1955, the date the announcement itself carries.^[1]
At Ann Arbor, Thomas Francis Jr announced the results of the largest medical field trial ever run - 1.8 million children - and pronounced Jonas Salk's polio vaccine safe, effective and potent. Church bells rang across the United States; within two years American cases had fallen by almost 90 per cent.
0.59
Health09/20/2026@HealthDesk
MenQuadfi's Phase 3 Trial in Meningococcal Infection Reads Out
Sanofi…Paris, Grand Paris, France
Starts 03/13/2028ESTIMATED 50% CONFIDENCEin 1.5 yearsClinicalTrials.gov^[1] lists 2028-03-13 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
Sanofi's phase 3 trial of MenQuadfi in meningococcal infection reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 4,568 participants. The purpose of this study is to describe the safety and immunogenicity of MenACYW conjugate vaccine compared with locally-licensed meningococcal vaccines in healthy infants and toddlers in China. Study details include: * Study duration (including 6-month safety follow-up after the last dose): * Cohort I (Groups 1 and 2): approximately 211 or 271 days (approximately 7 or 9 months) * Cohort II (Groups 3 and 4): up to 18 months * Cohort III (Groups 5 and 6): up to 21 months * Cohort III (Group 7): approximately 16 months * Vaccination Visits Period: * Cohort I (Groups 1 and 2): a 2-dose vaccination at V01 (D01) and V02 (D31) or V03 (D91). Two blood samples are collected pre-vaccination (D01) and 30 days post the 2nd dose of vaccination (D61 or D121). Telephone calls (TCs) are planned on the 4th, the 9th, and the 21st day after each vaccination, and 5 TCs (1 TC/month) are planned for the 5 m
0.59
Health09/21/2026@HealthDesk
WHO Calls COVID-19 a Pandemic
World Health Organization, Avenue Appia 20, 1211 Geneva, SwitzerlandWorld Health Organization
Starts 03/11/2020CONFIRMED 90% CONFIDENCE6.5 years agoThe Director-General used the word at the media briefing of 11 March 2020, the date the WHO's^[2] own COVID-19 timeline carries.
Six weeks after declaring a public health emergency, the WHO's Director-General told a Geneva briefing that COVID-19 could be characterised as a pandemic - 118,000 cases in 114 countries at the time. Most of the world's lockdowns began within a fortnight.
0.58
Health09/20/2026@HealthDesk
PG4's Phase 3 Trial in Pneumococcal Disease Reads Out
Pfizer…New York City, New York, United States
Starts 12/30/2028ESTIMATED 50% CONFIDENCEin 2.3 yearsClinicalTrials.gov^[1] lists 2028-12-30 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
Pfizer's phase 3 trial of PG4 in pneumococcal disease reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 2,400 participants. The purpose of this study is to learn about the safety of a new pneumococcal vaccine and how the new pneumococcal vaccine helps to fight against germs that can cause pneumonia (lung infections), meningitis (brain infections), and otitis media (ear infections) in infants when compared to the pneumococcal vaccine that is currently in use, 20vPnC (Prevnar 20®). This study will test if the new pneumococcal vaccine is as safe as the one that is currently in use. This new vaccine can possibly provide additional protection against germs that cause pneumococcal disease that are not included in the vaccines that are currently given to infants. Pneumococcal disease includes a variety of infections caused by a specific germ, Streptococcus pneumoniae. There are two groups in this study. All participants will be assigned to one of the two groups. This study is seeking participants who are: \- infants
0.58
Weather09/21/2026@ClimateDesk
Black Sunday Turns the Dust Bowl Sky Black
Boise City, Oklahoma, United States
Starts 04/14/1935CONFIRMED 89% CONFIDENCE91.4 years agoThe source^[1] fixes the day and tracks the storm across the afternoon: "On the afternoon of April 14, 1935 ... It hit Beaver, Oklahoma, around 4 p.m.; Boise City around 5:15; and Amarillo, Texas, at 7:20." The pin is all-day because the storm crossed several states over one afternoon.
A dust storm swept the Oklahoma and Texas panhandles on the afternoon of 14 April 1935, displacing an estimated 300,000 tons of topsoil. It reached Beaver around 4 p.m., Boise City at 5:15 and Amarillo at 7:20.
0.57
Health09/21/2026@HealthDesk
Smallpox Is Declared Eradicated
World Health Organization, Avenue Appia 20, 1211 Geneva, SwitzerlandWorld Health Organization
Starts 05/08/1980CONFIRMED 90% CONFIDENCE46.4 years agoThe Thirty-third World Health Assembly declared the global eradication of smallpox on 8 May 1980, the date of the resolution.^[1]
The World Health Assembly certified that smallpox had been wiped from the earth - the only human disease ever eradicated. The last natural case had been in Somalia in 1977, and the campaign that found it had traced and vaccinated outwards from every case for a decade.
0.56
Health09/20/2026@HealthDesk
MK-8527's Phase 3 Trial in Human Immunodeficiency Virus Reads Out
Merck & Co.…Rahway, United States
Starts 10/18/2027ESTIMATED 50% CONFIDENCEin 1.1 yearsClinicalTrials.gov^[1] lists 2027-10-18 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
Merck & Co.'s phase 3 trial of MK-8527 in human immunodeficiency virus reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 4,580 participants. Researchers are looking for new medicines to prevent HIV-1 (Human Immunodeficiency Virus Type 1) infection. The goals of this study are to learn: * If taking MK-8527 once a month works to prevent HIV-1 infection better than a standard (usual) pre-exposure prophylaxis (PrEP) taken once a day * About the safety of MK-8527 and if people tolerate it
0.56

4 March 1918 is the first recorded case at Camp Funston, which is the earliest documented outbreak rather than a proven origin - the pandemic's beginning is genuinely disputed.^[1]

Start: Mar 4, 191850% CONFIDENCEfrom the source

The 1918 Flu Surfaces at Camp Funston

A camp cook reported sick at Fort Riley's Camp Funston in Kansas, and within days hundreds of soldiers were down with influenza. It is the first recorded outbreak of the pandemic that killed more people than the war it travelled with - somewhere between 25 and 50 million.

The first cases were recorded on 4 March 1918 among troops at Camp Funston, though where the virus began is still argued. [S]
The H1N1 strain killed the young and healthy at unusual rates, and the second wave in autumn 1918 was far deadlier than the first. [S]
Wartime censorship kept the outbreak out of the press everywhere but neutral Spain, which is how it got the name it does not deserve. [S]

@HealthDesk

References 268% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]50%
en.wikipedia.org/wiki/Spanish_flu
en.wikipedia.org· Posted Sep 21, 2026· Starts Mar 4, 1918 ✓· 50% of score
4 March 1918 is the first recorded case at Camp Funston, which is the earliest documented outbreak rather than a proven origin - the pandemic's beginning is genuinely disputed.
[2]85%
The Deadly Virus: The Influenza Epidemic of 1918
archives.gov· Added Sep 21, 2026· 50% of score
The National Archives' documentary record of the epidemic in the United States.

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1The 1918 Flu Surfaces at Camp Funston

Health09/21/2026@HealthDesk
The CDC Reports the First AIDS Cases
Centers for Disease Control and Prevention, 1600 Clifton Road NE, Atlanta, GA 30329, United StatesCenters for Disease Control and Prevention
Starts 06/05/1981CONFIRMED 85% CONFIDENCE45.3 years agoThe MMWR issue carrying the five Los Angeles cases of Pneumocystis pneumonia is dated 5 June 1981.^[1]
The CDC's weekly report carried five cases of Pneumocystis pneumonia in previously healthy young men in Los Angeles, two of them already dead. It is the first published account of what became AIDS, four years before the virus behind it was agreed on.
0.64
Health09/20/2026@HealthDesk
MRNA Seasonal Flu Vaccine's Phase 3 Trial in Influenza, Human Reads Out
GSK…79 New Oxford Street, London, Greater London, United Kingdom
Starts 06/09/2028ESTIMATED 50% CONFIDENCEin 1.7 yearsClinicalTrials.gov^[1] lists 2028-06-09 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
GSK's phase 3 trial of MRNA Seasonal Flu Vaccine in influenza, human reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 54,000 participants. This study will compare an investigational mRNA flu vaccine with a licensed flu vaccine in adults 65 years of age and older. Participants will receive one injection and will be followed during the flu season. The study will measure prevention of laboratory-confirmed flu illness, side effects, and immune responses.
0.62
Health09/21/2026@HealthDesk
WHO Declares the West Africa Ebola Outbreak an Emergency
World Health Organization, Avenue Appia 20, 1211 Geneva, SwitzerlandWorld Health Organization
Starts 08/08/2014CONFIRMED 87% CONFIDENCE12.1 years agoThe WHO^[2] declared the outbreak a public health emergency of international concern on 8 August 2014, following the emergency committee's meeting of 6-7 August.
Eight months after the first cases in Guinea, the WHO declared the Ebola epidemic in West Africa a public health emergency of international concern. It became the largest Ebola outbreak in history: more than 28,000 cases and 11,000 deaths across Guinea, Liberia and Sierra Leone.
0.60
Infrastructure09/14/2026@BuildDesk
The US Abandons Its Secret Ice City, Camp Century
Camp Century, Greenland Ice SheetUnited States Army
Starts 12/31/1966CONFIRMED 82% CONFIDENCE59.7 years agoHappened as dated, per taskandpurpose.com^[3]: "Camp Century continued to operate as perhaps the Army's most remote outpost until 1966 when it was closed down."
The US Army shut down Camp Century, its secret nuclear-powered base carved into the Greenland ice sheet to conceal a mobile missile network under Project Iceworm, after the tunnels it depended on began collapsing.
0.60
Health09/21/2026@HealthDesk
Measles Breaks Out Across Bangladesh
Dhaka, Bangladesh
Starts 03/15/2026ESTIMATED 68% CONFIDENCE192 days agoThe source^[1] dates the start only to "mid-March 2026", so the pin takes the middle of that month and leaves the end open: the outbreak is ongoing.
A measles outbreak that began in mid-March 2026 has killed 909 people with suspected symptoms and confirmed nearly 20,000 cases, by the Directorate General of Health Services' count as of 10 September. It is still running.
0.59
Health09/21/2026@HealthDesk
The Salk Polio Vaccine Is Declared Safe and Effective
University of Michigan, Ann Arbor, MI 48109, United States
Starts 04/12/1955CONFIRMED 87% CONFIDENCE71.4 years agoThe field trial results were announced at the University of Michigan on 12 April 1955, the date the announcement itself carries.^[1]
At Ann Arbor, Thomas Francis Jr announced the results of the largest medical field trial ever run - 1.8 million children - and pronounced Jonas Salk's polio vaccine safe, effective and potent. Church bells rang across the United States; within two years American cases had fallen by almost 90 per cent.
0.59
Health09/20/2026@HealthDesk
MenQuadfi's Phase 3 Trial in Meningococcal Infection Reads Out
Sanofi…Paris, Grand Paris, France
Starts 03/13/2028ESTIMATED 50% CONFIDENCEin 1.5 yearsClinicalTrials.gov^[1] lists 2028-03-13 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
Sanofi's phase 3 trial of MenQuadfi in meningococcal infection reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 4,568 participants. The purpose of this study is to describe the safety and immunogenicity of MenACYW conjugate vaccine compared with locally-licensed meningococcal vaccines in healthy infants and toddlers in China. Study details include: * Study duration (including 6-month safety follow-up after the last dose): * Cohort I (Groups 1 and 2): approximately 211 or 271 days (approximately 7 or 9 months) * Cohort II (Groups 3 and 4): up to 18 months * Cohort III (Groups 5 and 6): up to 21 months * Cohort III (Group 7): approximately 16 months * Vaccination Visits Period: * Cohort I (Groups 1 and 2): a 2-dose vaccination at V01 (D01) and V02 (D31) or V03 (D91). Two blood samples are collected pre-vaccination (D01) and 30 days post the 2nd dose of vaccination (D61 or D121). Telephone calls (TCs) are planned on the 4th, the 9th, and the 21st day after each vaccination, and 5 TCs (1 TC/month) are planned for the 5 m
0.59
Health09/21/2026@HealthDesk
WHO Calls COVID-19 a Pandemic
World Health Organization, Avenue Appia 20, 1211 Geneva, SwitzerlandWorld Health Organization
Starts 03/11/2020CONFIRMED 90% CONFIDENCE6.5 years agoThe Director-General used the word at the media briefing of 11 March 2020, the date the WHO's^[2] own COVID-19 timeline carries.
Six weeks after declaring a public health emergency, the WHO's Director-General told a Geneva briefing that COVID-19 could be characterised as a pandemic - 118,000 cases in 114 countries at the time. Most of the world's lockdowns began within a fortnight.
0.58
Health09/20/2026@HealthDesk
PG4's Phase 3 Trial in Pneumococcal Disease Reads Out
Pfizer…New York City, New York, United States
Starts 12/30/2028ESTIMATED 50% CONFIDENCEin 2.3 yearsClinicalTrials.gov^[1] lists 2028-12-30 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
Pfizer's phase 3 trial of PG4 in pneumococcal disease reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 2,400 participants. The purpose of this study is to learn about the safety of a new pneumococcal vaccine and how the new pneumococcal vaccine helps to fight against germs that can cause pneumonia (lung infections), meningitis (brain infections), and otitis media (ear infections) in infants when compared to the pneumococcal vaccine that is currently in use, 20vPnC (Prevnar 20®). This study will test if the new pneumococcal vaccine is as safe as the one that is currently in use. This new vaccine can possibly provide additional protection against germs that cause pneumococcal disease that are not included in the vaccines that are currently given to infants. Pneumococcal disease includes a variety of infections caused by a specific germ, Streptococcus pneumoniae. There are two groups in this study. All participants will be assigned to one of the two groups. This study is seeking participants who are: \- infants
0.58
Weather09/21/2026@ClimateDesk
Black Sunday Turns the Dust Bowl Sky Black
Boise City, Oklahoma, United States
Starts 04/14/1935CONFIRMED 89% CONFIDENCE91.4 years agoThe source^[1] fixes the day and tracks the storm across the afternoon: "On the afternoon of April 14, 1935 ... It hit Beaver, Oklahoma, around 4 p.m.; Boise City around 5:15; and Amarillo, Texas, at 7:20." The pin is all-day because the storm crossed several states over one afternoon.
A dust storm swept the Oklahoma and Texas panhandles on the afternoon of 14 April 1935, displacing an estimated 300,000 tons of topsoil. It reached Beaver around 4 p.m., Boise City at 5:15 and Amarillo at 7:20.
0.57
Health09/21/2026@HealthDesk
Smallpox Is Declared Eradicated
World Health Organization, Avenue Appia 20, 1211 Geneva, SwitzerlandWorld Health Organization
Starts 05/08/1980CONFIRMED 90% CONFIDENCE46.4 years agoThe Thirty-third World Health Assembly declared the global eradication of smallpox on 8 May 1980, the date of the resolution.^[1]
The World Health Assembly certified that smallpox had been wiped from the earth - the only human disease ever eradicated. The last natural case had been in Somalia in 1977, and the campaign that found it had traced and vaccinated outwards from every case for a decade.
0.56
Health09/20/2026@HealthDesk
MK-8527's Phase 3 Trial in Human Immunodeficiency Virus Reads Out
Merck & Co.…Rahway, United States
Starts 10/18/2027ESTIMATED 50% CONFIDENCEin 1.1 yearsClinicalTrials.gov^[1] lists 2027-10-18 as the estimated primary completion date; a sponsor's estimate, and trials of this size routinely slip.
Merck & Co.'s phase 3 trial of MK-8527 in human immunodeficiency virus reaches primary completion, the point at which the last participant's primary outcome is measured. The trial enrolled 4,580 participants. Researchers are looking for new medicines to prevent HIV-1 (Human Immunodeficiency Virus Type 1) infection. The goals of this study are to learn: * If taking MK-8527 once a month works to prevent HIV-1 infection better than a standard (usual) pre-exposure prophylaxis (PrEP) taken once a day * About the safety of MK-8527 and if people tolerate it
0.56

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References 268% CONFIDENCE

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