Kirubakaran Rajendran Profile picture
Mar 29, 2020 9 tweets 3 min read Read on X
History repeats! Here’s how some cities ‘flattened the curve-controlled the spread’ during the 1918 flu pandemic. #SpanishFlu
Philadelphia detected its first case of a deadly, fast-spreading strain of influenza on September 17, 1918.
Yet 10 days later—despite the prospect of an epidemic at its doorstep—the city hosted a parade that 200,000 people attended, that spread the virus like wildfire.
Cities that reacted earlier vs Cities reacted late ImageImage
The 1918 flu, also known as the Spanish Flu, lasted until 1920 and is considered the deadliest pandemic in modern history. That’s two long years, considering lower population rate back then, not sure how long this #COVID going to take to get controlled.
Cities under lockdown for more weeks controlled the virus whereas cities that lifted the ban early faced another wave of new cases being reported. ImageImage
Shortly after health measures were put in place in Philadelphia, a case popped up in St. Louis. Two days later, the city shut down most public gatherings and quarantined victims in their homes. The cases slowed. By the end of the pandemic,100 million people were dead worldwide.
It is found that death rates were around 50 percent lower in cities that implemented preventative measures early on, versus those that did so late or not at all. The most effective efforts had simultaneously closed schools, churches, and theaters, and banned public gatherings.
Cities which lifted restrictions on public gatherings less than two months after the outbreak began, a rash of new cases soon followed. But cities that kept interventions in place, none experienced a second wave of high death rates.
Over all it took almost 24 weeks to slow down the virus spread. Here’s the complete article nationalgeographic.com/history/2020/0…

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More from @kirubaakaran

Feb 5
Anthropic just wiped $285 billion from global software stocks in a single day. And if you work in Indian IT, you need to pay attention. Here's what happened and what it means for your career 🧵 Image
On January 30, Anthropic released 11 plugins for Claude Cowork, an AI agent that doesn't just chat. It reads files, organizes folders, drafts documents, reviews contracts, manages sales pipelines, writes SQL queries, and handles compliance tracking.

It's not a chatbot. It's a digital employee.Image
Stock Market panicked. All IT Companies faced the heat,$285 Billion market cap wiped out in a single day. Image
Read 9 tweets
Nov 15, 2025
Just got back from Mauritius. 5 days. Self-planned. No rushing between tourist spots. Just picked one place and enjoyed the most. If you wondering about Flight, Visa, Currency, Car Rental and all other details, here's the complete breakdown 🧵 Image
FLIGHTS: Chennai → Mauritius via Bangalore ₹75k for 2 people (round trip)
Direct flights:
Delhi/Mumbai: Daily
Bangalore: Tue, Thu, Sat, Sun
Chennai: Only Tuesday
6 hours from Bangalore to Mauritius.
VISA: Not needed for Indians. You just need to fill online travel declaration:
Keep Return tickets and Hotel booking confirmation ready for Immigration checks. That's it.safemauritius.govmu.org
Read 18 tweets
Sep 15, 2025
Every time Bitcoin corrected, I claimed the bubble had burst. Every single time, it proved me wrong. Then one day I stepped back from price charts and decided to actually learn everything about crypto trading. This thread will help you take your first trade in Crypto. Image
Just like everyone, I had my doubts.
"At least stocks have underlying businesses. What does crypto have? Blockchain?"
I was too naive to understand blockchain. The entire crypto ecosystem relies on it.
Let me explain it in simple terms that finally made sense to me. Image
Imagine a shared notebook that anyone can see and write in, but once something is written, nobody can erase or change it. All your friends keep identical copies - if one person tries to cheat and change a page, everyone notices and rejects it. Image
Read 31 tweets
Jul 4, 2025
What if I told you that Jane Street made ₹36,500 crores from Indian markets in just 2 years, and ₹4,800 crores of that was allegedly through market manipulation? They turned India's stock market into their personal ATM using a strategy so clever. Here's the complete details 🧵
Who is Jane Street?

Founded in 2000, USA
2,600+ employees globally
High-frequency trading wizards
Operates through 4 entities in India (2 foreign, 2 domestic)

They're not investors. They're traders using algorithms that execute faster than you can blink. Image
First, the mind-blowing numbers:

Total profit in 2 years: ₹36,502 crores
Profit from options: ₹43,289 crores
LOSS from stocks/futures: ₹7,496 crores

Wait, they LOST money in stocks? This wasn't incompetence. It was genius-level manipulation.
Read 20 tweets
Jul 2, 2025
Rise of Ai could destroy lot of careers in next 5 years, biggest impact will be for Investment Advisors & Research Analyst. I just used @zerodhaonline MCP + Claude AI to analyse my portfolio and suggest what needs to be done. I was amazed by its output. Here's how you can do it Image
First you need to Download and install Node.js from nodejs.org and install Claude Desktop application.
Go to Claude Settings
Click on Developer 
Click Edit Config and add the below config , save and restart Claude Desktop
{
"mcpServers": {
"kite": {
"command": "npx",
"args": ["mcp-remote", "mcp.kite.trade/sse"]
}
}
}Image
First you need to autheticate with your Zerodha credentials. Once done, you can give necessary prompts to analyze your portoflio. Image
Image
Read 8 tweets
May 30, 2025
Solo traveled to Vietnam with zero plans, chose just one city — Da Nang — and it turned out to be the most peaceful, soulful vacation I’ve ever had. Vietnam is vast, but you don’t need to race across the country, if you are on time constraint, then opt for Da Nang. Here's why🧵 Image
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While everyone rushes to Hanoi or Ho Chi Minh, Da Nang offers something different - a laid-back vibe where luxury costs less than domestic Indian destinations. You get to see Pristine beaches and beautiful hill station, which is just an hour drive. Image

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Checked into Outpost hostel initially. Totally dead. Bad vibe. Within hours, I moved to another near by hostel Rom Casa — vibrant, buzzing, full of travelers from around the world. Best decision. When you are traveling, don't fall for sunk cost fallacy.
Read 15 tweets

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